[Qgis-user] QGIS action to run a command in a terminal window on Windows

[Brent Wood via QGIS-User]

Hi,

I'm trying to create an action to run an SQL on a spatialite database & show 
the result as a QGIS action.

In Linux this works by running a script in an xterm, but I can't work out how 
to do something similar under widows.

Any suggestions?

Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: QGIS-User  on behalf of Brent Wood via 
QGIS-User 
Sent: Wednesday, March 6, 2024 09:33
To: 'Qgis-user@lists.osgeo.org' 
Cc: Nyall Dawson 
Subject: [Qgis-user] Problem: Can't open Spatialite tables in QGIS on Windows

Hi,

We have been using QGIS & Spatialite for years and have recently encountered a 
problem in QGIS under Windows.

We connect to a spatialite database fine, we can list the tables, but when we 
try to open them we get an error:
db <...> table <...> is an invalid layer - not loaded (this is also written to 
the log)

I can open the db in DBManager and enter the query "select * from t_transect;" 
which runs & shows the data in the output pane.
When I try to load the layer as a map layer I get an error message referring me 
to the error log, but the log is empty.

This is using QGIS 3.34.1 on Windows.

The same database file works perfectly on Linux, with QGIS v3.34.3. A colleague 
has tried this & v3.36 on Windows with the same problem. The databases are 
generated with echo sounder data by the ESP3 application, and we have been able 
to use these in QGIS for years without problems until now.

Spatialite access the tables fine, the basic metadata is present:
select * from geometry_columns;
t_transect|geom_col|1|2|4326|0
t_echoint_transect_1d|geom_col|1|2|4326|0

The QGIS error message is not particularly helpful in determining the problem. 
Our workaround is to run the SQL we would have run in the QGIS database manager 
directly from the spatialite command line, exported to CSV & then open the CSV 
in QGIS, which works, but is not ideal.

For some context about these data:  The figure shows each "ping" from the echo 
sounder, scaled by the magnitude of the echo from fish, showing the location 
and density of fish encountered on each transect (ESP3 is used for the acoustic 
analysis). This dataset was from surveying a hill off the west coast of New 
Zealand (generated on Linux!).

[cid:d8335c55-7ad0-42bf-a514-c2ff56fc3815]
Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz/>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz/> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
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[Qgis-user] Adding virtual X & Y columns to a QGIS attribute form

[Brent Wood via QGIS-User]

Hi,

I have created an attribute form for a QGIS layer.

I want to add two fields to the form: the X & Y values of a point geometry 
column.

I can't find any way to do this - if I don't use the form, it is easy to add 
the virtual columns as expressions ($x & $y) in the table view, but I want 
these in the form view, not the table view.


Any suggestions appreciated.

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
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Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
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Re: [Qgis-user] Adding a Web map to QGIS

[Brent Wood via QGIS-User]

Hi Krishna,

Can you not ask them to turn on the WFS service in their ARC setup? Unless, 
like many govt agencies, they just ignore users requests. Sigh.

Another option is to look for the data you want in data.gov. I have found that 
govt agencies often have strange & limited access to their data in-house, but 
also provide their data to data.gov, where it is more accessible.


Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: QGIS-User  on behalf of Emma Hain via 
QGIS-User 
Sent: Tuesday, March 12, 2024 12:21
To: krishna Ayyala 
Cc: qgis-user 
Subject: Re: [Qgis-user] Adding a Web map to QGIS

Hi Krishna
It looks like it is coming from the FCC Broadband 
Service<https://www.arcgis.com/home/search.html?restrict=false=relevance=desc=tags%3A%22Federal+Communications+Commission%22#content>
 so you can sift through their data and find what you need and link to it via 
your browser. It looks like the data is more in Tables so will need to play 
with them and link them into the Block Groups I think.
I saw this stack overflow about it as well : 
https://stackoverflow.com/questions/77629483/is-the-fcc-national-broadband-map-api-endpoint-working
Cheers
Em

On Sat, 9 Mar 2024 at 04:20, krishna Ayyala via QGIS-User 
mailto:qgis-user@lists.osgeo.org>> wrote:
Hello,
Is there any way that I can add this map to QGIS? I already wrote to the OK 
broadband office requesting the source data and did not hear back from them. I 
am pasting below the weblink.

OK Broadband 
Map<https://map.broadband.ok.gov/map?zoom=7=-10831633%2C4203984>

Regards.
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--
Emma Hain — Product Manager/Senior GIS Analyst
e...@north-road.com<mailto:e...@north-road.com>
[https://north-road.com]
North Road
Cartography • Development • Spatial Analysis

north-road.com<http://north-road.com/>
[https://ci3.googleusercontent.com/mail-sig/AIorK4xbsQ72BNIM2cWMZcuEKVer1Bwaq_gqYkdbtrjK2ifrqv-4o7aWjcvilgYXtNGpXLNgD00xgmQ]<https://twitter.com/northroadgeo>[https://ci3.googleusercontent.com/mail-sig/AIorK4zEBWGJKio8gqmFT0h_51t4ZnmoGgbmV7SeL-4FKvwWApFWDWyK7p-c0-cSskUe7pjQzjEZj9Q]<https://www.linkedin.com/company/north-road-studios>[https://ci3.googleusercontent.com/mail-sig/AIorK4wlMciFPm8hqQZB_Qi57PUCv1dJqUC1A2i9qEMzWRFLcJ7Jil30YnULdJLxT6-qMfI6J4kcac4]<https://www.facebook.com/North-Road-997236690392419/home>
[https://womenindigital.org/wp-content/uploads/2023/03/WID-Membership-Badge.jpg]
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz/>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz/> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
contain information that is confidential or subject to legal professional 
privilege. If you receive this email in error please immediately notify the 
sender and delete the email.
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[Qgis-user] Problem: Can't open Spatialite tables in QGIS on Windows

[Brent Wood via QGIS-User]

Hi,

We have been using QGIS & Spatialite for years and have recently encountered a 
problem in QGIS under Windows.

We connect to a spatialite database fine, we can list the tables, but when we 
try to open them we get an error:
db <...> table <...> is an invalid layer - not loaded (this is also written to 
the log)

I can open the db in DBManager and enter the query "select * from t_transect;" 
which runs & shows the data in the output pane.
When I try to load the layer as a map layer I get an error message referring me 
to the error log, but the log is empty.

This is using QGIS 3.34.1 on Windows.

The same database file works perfectly on Linux, with QGIS v3.34.3. A colleague 
has tried this & v3.36 on Windows with the same problem. The databases are 
generated with echo sounder data by the ESP3 application, and we have been able 
to use these in QGIS for years without problems until now.

Spatialite access the tables fine, the basic metadata is present:
select * from geometry_columns;
t_transect|geom_col|1|2|4326|0
t_echoint_transect_1d|geom_col|1|2|4326|0

The QGIS error message is not particularly helpful in determining the problem. 
Our workaround is to run the SQL we would have run in the QGIS database manager 
directly from the spatialite command line, exported to CSV & then open the CSV 
in QGIS, which works, but is not ideal.

For some context about these data:  The figure shows each "ping" from the echo 
sounder, scaled by the magnitude of the echo from fish, showing the location 
and density of fish encountered on each transect (ESP3 is used for the acoustic 
analysis). This dataset was from surveying a hill off the west coast of New 
Zealand (generated on Linux!).

[cid:d8335c55-7ad0-42bf-a514-c2ff56fc3815]
Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
contain information that is confidential or subject to legal professional 
privilege. If you receive this email in error please immediately notify the 
sender and delete the email.
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[Qgis-user] QGIS unable to access Spatialite tables.

[Brent Wood via QGIS-User]

Hi,

I and a few colleagues are encountering a problem accessing Spatialite tables 
from QGIS.
It does not seem to be happening with v3.28, but it is with v3.34 (in both 
Linux & Windows).

When opening a table in v2.8 there are no issues, everything is working as it 
has in recent years.
However, opening the same table (or an SQL on that table) results in an error 
message about an invalid layer, but no further or useful diagnostic info.

Can anyone suggest a possible cause or solution? My current workaround is to 
run the select in the Spatialite command line tool, with the geometry exported 
as WKT & then open the text file in QGIS.

At present I'm still trying to get access to the QGIS issues facility to log 
this problem, so cannot raise this there at present.



Thanks...

  Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
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privilege. If you receive this email in error please immediately notify the 
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[Qgis-user] QGIS/spatialite issue - invalid layers

[Brent Wood via QGIS-User]

Hi,

I have created an empty spatialite database with QGIS via the browser.

Running Mint Linux with QGIS:

3.34.1-Prizren

QGIS code revision

133927424d9<https://github.com/qgis/QGIS/commit/133927424d9>



I create a spatialite table (in spatialite) & add some point data (EPSG 4326 - 
column is called "geom"). This opens fine in QGIS.

I add another geometry column to the table (point, epsg:3994)  & populate it 
with:
  update station set geom_3994= transform(geom,3994);

This appears fine in spatialite, but QGIS tells me it is an invalid layer, but 
nothing about why...

I have been doing this sort of stuff for years & not encountered this before.

Can anyone help me sort out why QGIS regards the data as invalid, & how to fix 
this?


Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
contain information that is confidential or subject to legal professional 
privilege. If you receive this email in error please immediately notify the 
sender and delete the email.
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[Qgis-user] QGIS attribute forms question

[Brent Wood via QGIS-User]

Hi,

I have created some forms for data entry/edit using QGIS.

I have successfully exported them & imported them to apply in different 
computers with QGIS.

It can take several hours to create such a form where there are 80+ columns in 
the underlying database table,

I now have the situation where the underlying table needs columns added or 
removed.

QGIS will not apply a saved form to a layer unless the structure is identical.


How can I reuse a form for a layer representing a database table with (say) a 
single new column, by adding the new column to the form, rather than manually 
creating the whole form from scratch?


Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
contain information that is confidential or subject to legal professional 
privilege. If you receive this email in error please immediately notify the 
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[Qgis-user] Null value issue in attribute form

[Brent Wood via QGIS-User]

Hi,

I have a database table which has an attribute form built for data entry, in 
QGIS 3.34.

There is a text field "station_code"
It is set to not null & enforce not null in the form.

If the default value is null (empty) the form includes the default text 'NULL'.
Any text entered in the form is then appended to the string 'NULL', which is 
NOT what I want to happen. This behaviour requires the user to delete the 4 
chars 'NULL' every time they enter some data, before typing in the value, which 
is something of an inconvenience, and leads to data errors.

If I set the default value in the form to '' (empty string), then the field is 
populated with this by default, and data entry works as I want, however, as 
this value is not null, the record can be saved without a value being entered, 
so the not null requirement is essentially useless.

Is there a way to set the form up to have a "not null" constraint applied in 
the form, without having QGIS pre-populate the field in the form with the 
string 'NULL'?
It works for integer types, the form has an italicised 'NULL' but this does NOT 
form part of the value in the field, unlike the string field.


Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science> 
YouTube<https://www.youtube.com/channel/UCJ-j3MLMg1H59Ak2UaNLL3A>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.
Note: This email is intended solely for the use of the addressee and may 
contain information that is confidential or subject to legal professional 
privilege. If you receive this email in error please immediately notify the 
sender and delete the email.
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Re: [Qgis-user] How can I center a world map cylindric projection over the Pacific Ocean?

[Brent Wood via QGIS-User]

Create a custom projection (CRS) with the parameters you want.

>From the main menu
Settings -> Custom projections


Find one that is close to what you want, paste it here & edit to your 
preferences



Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: QGIS-User  on behalf of JOE LEMONNIER 
via QGIS-User 
Sent: Saturday, April 29, 2023 10:41
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] How can I center a world map cylindric projection over the 
Pacific Ocean?

Ideally, I would like to be able to change the center of projection for 
Cylindric as well as Pseudo-cylindric projections to center a world map over 
the meridian of my choice. Is there a simple way to do this? Please advise.

Thanks in advance,

Joe
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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz/> 
Facebook<https://www.facebook.com/nzniwa> 
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To ensure compliance with legal requirements and to maintain cyber security 
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[Qgis-user] Post Cyclone Gabrielle aerial imagery for Hawkes Bay, New Zealand

[Brent Wood via QGIS-User]

This might interest QGIS-ers...

The LINZ (Land Information New Zealand) Data plugin ( allows users to connect 
to the LINZ Data Service WMTS services.
(https://www.linz.govt.nz/guidance/data-service/using-linz-data-importer-plugin-qgis,
 https://plugins.qgis.org/plugins/linz-data-importer/)

Since the cyclone the river valleys which were worst affected have been flown 
and the resulting map imagery made available by LINZ:
https://data.linz.govt.nz/layer/112726-hawkes-bay-010m-cyclone-gabrielle-aerial-photos-2023/

I'm using this with QField on a smartphone (Android) for field sampling 
sediment deposits - seems to work well.


Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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Re: [Qgis-user] transferring data from ArcGis to QGIS

[Brent Wood via QGIS-User]

Hi Janet,

See https://north-road.com/slyr/

There is a free community version and a commercial one if you need the extra 
functionality.




Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: QGIS-User  on behalf of Janet via 
QGIS-User 
Sent: Friday, January 20, 2023 10:20
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] transferring data from ArcGis to QGIS

For a number of years, whilst a student and on the staff of University I have 
used ArcGis.  After this year I will be retiring from University and losing 
this access.  I would like to copy all my work over to QGIS, so that I can 
continue my research, could you let me know if this is possible and where I can 
locate directions to do it.  I have all my work on an external hard drive.

Many thanks

Janet
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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[Qgis-user] QGIS & GPS

[Brent Wood via QGIS-User]

Gidday and Happy New Year from New Zealand!

I have spent too many hours on this already, sigh... Hopefully someone can help.

I normally use QGIS with USB GPS units on Linux and don't have driver issues, 
everything just works. But I now need to re-introduce myself to QGIS on Windows 
to set things up for other users, and it is proving very painful.

I'm using QGIS dev (3.29), 3.22 & v3.28 at present. Same issue on Windows with 
all of them.

I have historically used a Globalsat BR-355S4 USB GPS on Windows with no 
problems. Just install the Prolific USB-serial driver and everything works fine.

My recent Linux work has been using a G-Mouse (U-blox 7) chipset GPS which 
Linux typically mounts as /dev/ttyACM0 and QGIS is fine with that. Linux needs 
no additional drivers to be installed for this to work.

Now I'm trying to get this working on Windows... I can install the U-blox VCP 
(virtual com port) driver. The native driver Win10 finds & installs also  seems 
to work, but not with QGIS. I can connect to the relevant com port with several 
GPS monitoring applications & see the NMEA sentences fine. QGIS lists the port 
OK, but fails to connect on auto or to the port directly. This is not uncommon 
with the U-Blox 7, but none of the fixes I have found online have worked for me.

I just bought another GPS, a new model Globalsat one, BU-353N5, a replacement 
for the BR-355S4. This is not sending the $GP sentences, just the $GN ones. My 
GPS monitoring applications work OK with this on Linux & Windows, but QGIS on 
both platforms lists the device to connect to, but is unable to connect & use 
the GPS data. I can't even log the data with QGIS as QGIS won't connect to the 
port in the first place.

My 3 questions:

How can I get a U-Blox7 chipset GPS (which is working fine on Windows with 
other applications) recognised by and working with QGIS?

How can I get a  Globalsat  BU-353N or other GPS that does not output $GPGGA or 
$GPRWC, but provides $GNGGA instead, etc working with QGIS?

Can anyone suggest an alternative cheap, generic USB GPS which simply and 
reliably works with QGIS on Windows?

Is this something that I should file a bug report for (it does seem to be a 
fragility in QGIS that is not present in other GPS software)? I'm happy to send 
a working USB GPS to any dev willing to look into this.


Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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Re: [Qgis-user] The license agreement of QGIS

[Brent Wood via QGIS-User]

The full licence is described here:
https://docs.qgis.org/3.22/en/docs/user_manual/appendices/GNU_GPL.html

Essentially it means you can install and use QGIS anywhere you want for 
whatever the cost of downloading it might be (usually free). You can be an 
individual, government agency, commercial business, etc., that doesn't matter.

Note that if you do change the source code to provide some functionality that 
you require, the licence requires you to make your enhancements available under 
the same licence.

Cheers,

Brent Wood


From: QGIS-User  on behalf of Paco Lui via 
QGIS-User 
Sent: Thursday, December 8, 2022 16:01
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] The license agreement of QGIS

Dear sir/madam,

I , on behalf of, Hong Kong Government, to ask some question about the license 
agreement for QGIS, our Division want to install the QGIS software for work 
purpose and I want to ask that need our division buys a license or it is free? 
thanks.

Best Regards,
Mr. Paco Lui
System Analyst1/TECH
Survey Division, Highways Department, Hong Kong Government
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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[Qgis-user] Proj DB version conflict

[Brent Wood via Qgis-user]

Hi,

I have a problem working with QGIS, Spatialite, R (sf package), and Postgis on 
Linux (Mint/Ubuntu)

I cannot find versions of these applications that all share a common version of 
proj.db, and I cannot find a way to have a separate proj.db for each 
application.

Any suggestions?


Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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Re: [Qgis-user] Watershed - Catchment area upstream of a point

[Brent Wood via Qgis-user]

Hi Tony,

Just wondering

If QGIS is using SAGA to do the work, have you considered installing SAGA & 
using it directly?

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: Qgis-user  on behalf of Tony Shepherd 
(FarmMaps NZ) via Qgis-user 
Sent: Wednesday, November 9, 2022 11:04
To: 'Qgis Users List' 
Subject: [Qgis-user] Watershed - Catchment area upstream of a point


Hi All



I’m wanting to use a DEM/DTM to automatically map the watershed/catchment area 
upstream of a known point.



After a bit of reading, this appears to be a not-so-simple task but suggestions 
are to use the “Upslope Area” algorithm.



In my case, the program fails to finish running, and the message window shows 
the following error:

 SAGA Version: 7.8.2 (64 bit)
 Error: tool needs graphical user interface [Upslope Area]

 C:\Users\Tony\Documents>exit



Questions:

  *   Does anybody know what that error means?
  *   Is there another tool/method that is preferable to use?



Cheers

Tony



Tony Shepherd  |  GeoSpatial / Mapping Manager



Ph 027 435 6193  |  E t...@farmmaps.nz<mailto:t...@farmmaps.nz>  |  W 
shepherdphotos.co.nz<https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fshepherdphotos.co.nz%2F=05%7C01%7Cbrent.wood%40niwa.co.nz%7C9941688e99594ac634e208dac1d536ae%7C41caed736a0c468aba499ff6aafd1c77%7C0%7C0%7C638035418755979072%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C=SrutAaZHRLcffAE5lUT%2F40n3KFEU8pPHwLlAFAEwcU4%3D=0>



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[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Twitter<https://twitter.com/niwa_nz> 
Instagram<https://www.instagram.com/niwa_science>
To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems
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Re: [Qgis-user] [QGIS-Developer] Model for Temporal Measurement (vector) Datasets ?

[Brent Wood via Qgis-user]

Hi Richard,

I think the underlying issue here is that QGIS does not do data management... 
It just accesses data (whether not managed, managed or mismanaged).

You are correct, the traditional GIS model of a feature with attributes does 
not map to the real world very well in many use cases, and timeseries data is 
one. GIS is seldom used to manage data these days, with very powerful spatially 
enabled databases readily available. To use your IOT approach where location is 
just an attribute, in a relational db, the location IS just another attribute. 
Unlike the GIS model, where the spatial feature is somehow different, here it 
isn't. A record can have multiple geometries, times, dates, strings, numerics, 
etc... like start time, end time, start location, end location, trackline 
between them, if you want... impossible without nasty hacks in a GIS centric 
data store.

So you have a pretty standard situation where you have a set of sites where 
data is captured in an ongoing basis.

I have designed Postgis databases to do this... most recently, when 
Postgres/Postgis was staring to slow down a bit with 600,000,000 readings I 
moved to Postgres/Postgis/TimescaleDB which is returning typical query results 
in 10's of milliseconds with 4 billion readings.

You don't just have sites with readings, you have sites, sensors, calibrations, 
instruments, readings, personnel, etc... there is a whole lot of metadata/data 
pertaining to your setup that should probably be managed in a database. I don't 
know if you will have enough data to justify using TimescaleDB, but you should 
be using some sort of db to manage your data effectively & efficiently. And 
Postgis/Postgres is a hard combination to beat as a tool for doing this well.

Then you point QGIS at your database for the mapping, cartography, 
visualisation, etc. You can use database views to simplify queries, but there 
are issues with QGIS and views. I find using the QGIS DB manager with a query 
instantiated as a QGIS layer works much better than accessing a view in many 
cases.

And for an alternative mapping of IOT data to a data model, the Object 
Relational approach provided by Postgres supports non-relational structures 
like key/value (hstore) or jsonb data storage.


52North have a (somewhat complex) Postgis database design to provide a data 
store for their SOS (Sensor Observation Service) software. Perhaps overkill for 
your use case, but a very complete and robust solution. See: 
https://www.researchgate.net/figure/The-52-North-SOS-schema_fig14_327124727


Hope this helps, there are certainly effective ways to do what you want out 
there.


Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529



On 2 Sep 2022, at 13:07, Richard Duivenvoorde via QGIS-Developer 
 wrote:

Hi All,

Anybody is aware of a model in which data owns a location, but THAT location 
has a (growing) set of [timestamp, value] observation data to it

In GIS/QGIS everything is tabular (talking about vector here, I know meshes can 
have more shapes).

But in the IOT world the 'location' is 'just an attribute', and the 'other' 
data is actually more of interest (and growing in time).

Currently to view measurements, 'we' often replicate the location for every 
value/measurement: we create a 'Feature' for every time step (eg for example 
via a WFS)

The OGC has a SensorThingsApi (STA) standard, in which for given location you 
can request all values/observations (of filter a certain sensortype/parameter). 
So one geometry has a full table of data to it.

BUT to 'work' with that data in QGIS, you always have to 'flatten' it, one way 
or another, (I think), for every time step: create a feature with: location, 
time, value...

My Question:

- isn't there some model (or can we come up with one) in which a location can 
actually have a range of time/value data (like some table join like), and when 
you use the Temporal Controller, you style your layer by RE-using the one 
location, but getting the value for current Timestamp (in the TimeController). 
Some sort of indirect filtering?

- or is this the mesh model (I know netcdf's in which you have often predefined 
meshes/location and the data/time vector is growing)?
And would a solution be to have some kind of in memory vector -> mesh loader or 
so???

I hope this makes sense to others. Any input appreciated.

Regards,

Richard Duivenvoorde

PS, if you want to play with SensorThingsApi:
- install: https://github.com/AirBreak-UIA/SensorThingsAPI_QGIS-plugin
- connect it to: 
https://airquality-frost.k8s.ilt-dmz.iosb.fraunhofer.de/v1.1/Locations
(around 5000 location and 500-million 'observations')
- load all locations in one layer, and click on a location
My point: the data is then viewable/selectable by table and graph, but NOT 
loadable in a sense way (yet) in QGIS...
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[Qgis-user] Replay GPS data

[Brent Wood via Qgis-user]

Hi,

I have a log file of GPS NMEA messages captured during a survey.

I'm working with QGIS for real time data capture during these surveys.

For demo/training/dev purposes I'd like to pass the file of GPS messages into 
QGIS via teh GPS panel to simulate the real world survey.

Any suggestions as to how I can do this (running on Linux at present)??

I've tried gpsfake with gpsd but just run into network/port errors I can't 
resolve. I can uset netcat -l to listen then send the NMEA messages via netcat 
using a bash script, but can't see how to get netcat to work with QGIS as a 
listener.


Any advice appreciated!

Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: Qgis-user  on behalf of Nyall Dawson 
via Qgis-user 
Sent: Tuesday, July 12, 2022 13:08
To: Piet 
Cc: qgis-user 
Subject: Re: [Qgis-user] Qgis 3.22.8 Error messages displayed in the GUI

On Mon, 11 Jul 2022 at 21:40, Piet via Qgis-user
 wrote:
>
> Dear List,
>
> I used a selfcompiled Qgis, build with 'Debug-Option' set in ccmake.
>
> Now there's a small red window in the main window which displayed 
> errors/warning.
>
> In my case "Qt: QXcbConnection: XCB error: 3 (BadWindow), sequence: 65154, 
> resource id: 11286601, major code: 40 (TranslateCoords), minor code: 0",
>
> which seems to be a known QT-Bug.
>
> Can I turn of this error window?

This particular one is now filtered out for 3.26+, as it's not
reflective of a bug in QGIS.

The others still remain, as they likely ARE indicative of something
which needs fixing in QGIS. If you encounter them, you should open
tickets for each so that the underlying cause can be identified.

Nyall

>
> Because it's upset me a bit and I can see the warnings in a console as well.
>
> Thank you for any hint!
>
> Kind regards
>
> Piet
>
> ___
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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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Re: [Qgis-user] Polar stereographic (0 - 360 longitudes)

[Brent Wood via Qgis-user]

I don't believe you can.

The underlying proj libraries (as used by QGIS) no longer support longitudes > 
180 by default, so any re-projection from EPSG:4326 will only work with +-180 
longitudes.

There isa command line parameter (+over) which can be used with proj on the 
command line but I don't think this is supported by QGIS.

If you use Postgis (or Spatialite), there is an ST_ShiftLongitude() function 
that will switch +-180 to 0-360 or the reverse which makes the operation pretty 
trivial for any sort of geometry.

I have created a custom QGIS/Postgis projection (many years ago) which I 
assigned a code of 4327, this was essentially 4326 in a 0-360 degree space, so 
I could reproject between them, I'm not sure if this is still possible with the 
latest versions of proj with wkt definitions.

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Lester 
Anderson via Qgis-user 
Sent: Sunday, June 19, 2022 22:16
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] Polar stereographic (0 - 360 longitudes)

Hi all,

I have data which is in 0-360 degree longitudes and I would like to apply a 
Polar stereographic projection. However, since the EPSG 3995 has limits of 
-180/+180 for longitude, as expected it gives half the plot.

For some reason I cannot create a custom projection with an extent such as:
xmin=0, xmax=360, ymin=60, ymax=90 based on 3995 even removing reference to 
this ID.

Any ideas how to proceed without having to shift it all to +/- 180

Tested in 3.20 and 3.24

Thanks

Lester
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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Re: [Qgis-user] RAM and processing speed requirements for QGIS

[Brent Wood via Qgis-user]

Hi Helena,

My 02c - it totally depends...

QGIS as an application does not require much memory or cpu, until you throw 
data at it and ask it to do something. Your data and tasks determine the 
requirements, not the bare application. I did some benchmarking a while ago - R 
requires up to 8x the memory to load the same vector datasets as QGIS - so at 
least compared to R, QGIS is very memory efficient.

Also - QGIS has no data management capabilities. If you want to manage your 
spatial data on the same computer, you will probably want to install a spatial 
database, which will run in parallel to QGIS. So having the resources to do 
this will help a bit. A dual core cpu is not good for parallel processing - two 
few cores to be efficient.

That said, a reasonable i5 cpu with 8Gb of memory is plenty for basic tasks. 
More is obviously better. An older 2.7Ghz i5 is probably minimal, i7 a bit 
better. Before spending on hardware, try it and see. If your system performs 
well enough for you, that is really all you need to know. If not, fire up the 
system diagnostics & see what your memory & cpu (& possibly disk) bottlenecks 
are to see what you need more of.

Personally, I find the best general purpose platform to install & run QGIS on 
is Linux. If you are into cartography and the Adobe tools to work with 
graphics, then a Mac. Windows only if you don't have a choice.


Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Helena Farrell 
via Qgis-user 
Sent: Wednesday, April 20, 2022 06:46
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] RAM and processing speed requirements for QGIS

Hello, I am seeking input on whether my 7 year old Mac with 8GB RAM and a 
2.7gigahertz processor is likely to perform poorly at running QGIS. Since these 
are like the bare minimum in terms of power, and I assume QGIS is a data-heavy 
program, I may need to invest in a new computer. Anyone have advice on RAM and 
processing speed specifications  that I should look for and whether a PC be 
better than a Mac for running this program?

Thank you!
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Model Designer - GDAL - Vector Conversion

[Brent Wood via Qgis-user]

Have you considered a script or batch file using ogr2ogr to do this for you?

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: Qgis-user  on behalf of Johanna Botman 
via Qgis-user 
Sent: Wednesday, March 9, 2022 12:41
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] Model Designer - GDAL - Vector Conversion


I am trying to use the Model Designer to automate the creation of Tab files 
from SQL Database Tables.

I am using GDAL – Vector Conversion – Convert format

The resulting Tab file is missing the Primary Key field.

If use that same algorithm to export to a Geopackage, the PK is there.

I know that I can right click the SQL Table and select Export. That Tab file 
contains the PK. I need to export 30 tables so am looking for some automation.



Why does the algorithm produce a table without the key field?







Johanna Botman



Assets / GIS Officer – Melton City Council











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<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Rounding off QgsPointXY

[Brent Wood]

I'd suggest managing your data in Postgis.

Adding a rounded geometry to your dataset becomes a pretty simple sql (assuming 
your data is lat/lon - just change the SRID if it isn't):

alter table mydata add column rounded_geom geometry(POINT,4326);
update mydata set 
rounded_geom=ST_SetSRID(ST_MakePoint(round(ST_X(geom),2),round(ST_Y(geom),2)),4326);

line 1 creates the new column, line 2 populates it with new points with coords 
set to the rounded coords of the original. You still have the original to 
compare. Or you can drop it, as you prefer.

QGIS & Postgis make an incredibly effective suite. Postgis enables not just 
data management and query capability, but substantial spatial analytical power,
QGIS provides visualisation, as well as additional analytical tools.


Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

From: Qgis-user  on behalf of Asim al-sofi 

Sent: Sunday, February 20, 2022 14:03
To: QGIS User List 
Subject: [Qgis-user] Rounding off QgsPointXY

Hi everyone
I have a problem rounding off the QgsPointXY to say 3 decimals? How can I do 
that?
If I use the numpy.round(point,decimals) then I get an np.array back as a type 
and not a QgsPointXY.
Can someone help?
Kind regards
Asim
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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[Qgis-user] OGR VRT issue?

[Brent Wood]

Hi,

I'm looking to open a sqlite3 (not spatialite) database in QGIS.

I have a table in the db with a lat column & a lon column with EPSG:4326 
coordinates

I have written a VRT file to enable opening the table with a virtual geometry 
column. This works fine with ogrinfo on the command line, but creates an empty 
layer with no geometry type, columns or features in QGIS.

The VRT file contains:



test.db
test
wkbPoint
WGS84




Testing with ogrinfo is successful, the text returned is below.

The table contents are:
sqlite> select * from test;
id|lat|lon
1|-41.354|174.567

Can anyone explain why this fails in QGIS?
I'm running QGIS v3.16.11 on Linux (deb platform)

Thanks,

Brent Wood



ogrinfo result:

ogrinfo -geom=YES -al test.vrt
INFO: Open of `test.vrt'
  using driver `OGR_VRT' successful.
- 'VirtualXPath' [XML Path Language - XPath]

Layer name: test
Geometry: Point
Feature Count: 1
Extent: (-41.354000, 174.567000) - (-41.354000, 174.567000)
Layer SRS WKT:
GEOGCRS["WGS 84",
DATUM["World Geodetic System 1984",
ELLIPSOID["WGS 84",6378137,298.257223563,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
CS[ellipsoidal,2],
AXIS["geodetic latitude (Lat)",north,
ORDER[1],
ANGLEUNIT["degree",0.0174532925199433]],
AXIS["geodetic longitude (Lon)",east,
ORDER[2],
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",4326]]
Data axis to CRS axis mapping: 2,1
FID Column = rowid
id: Integer (0.0)
lat: Real (0.0)
lon: Real (0.0)
OGRFeature(test):1
  id (Integer) = 1
  lat (Real) = -41.354
  lon (Real) = 174.567
  POINT (-41.354 174.567)


[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png] 
<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Tip for managing heavy data

[Brent Wood]

Use a Postgis database. Should tick all your boxes and more.

I can help you set this up if you want (contact me off-group)


Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Dario 

Sent: Friday, November 26, 2021 07:10
To: QGIS List 
Subject: [Qgis-user] Tip for managing heavy data

Hi,
I was wondering if there is a easier way to manage my city base cartography.

I have several (around 40) layers, at the moment shape file, representing the 
whole city.

As I have a performed computer (for my needs) I use to manage this entire 
amount of data for my different project.

The issue is is not so comfortable share my projects with the rest of the team, 
which waste time waiting for uploading data.

I see two different scenario:
- create a WMS without any style customisation
- crop all the layers within a proper smaller area

The point is I don’t know how to do and, even more, if is the best approach.


Thank you for any tips!


Cheers,
Dario



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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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To ensure compliance with legal requirements and to maintain cyber security 
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Re: [Qgis-user] batch operation on gpkg with multiple layers

[Brent Wood]

Umm,

A bit left fieldish, but is that sort of thing something that Postgis is 
perhaps more suited to than QGIS?

Could you not ogr the geopackage into Postgis & script up the work you want 
doing?

It sounds like what you want to do is very much in the arena of data management.


Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Nicolas 
Cadieux 
Sent: Friday, September 24, 2021 08:33
To: Qgis Users List 
Subject: [Qgis-user] batch operation on gpkg with multiple layers


Hi,

Before I go to my default mode and python my way through this, is there a 
plugin that would permit me to perform batch operation on all the layers found 
in a single .gpkg file?  My geopackages contain hundreds of layers (from 
autocad) (contain identical data structures) and I would like to do things like:

  *   Perform field calculator operations on each layer within the geopackage
  *   Split all geopackage layer with a field
  *   Merge multiple layers in a new geopackage

I guess FME would be another way out? I there an OpenSource equivilant to this? 
(I have a home version but I need to respect the license for this one.)

Nicolas

--
Nicolas Cadieux
https://gitlab.com/njacadieux<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.com%2Fnjacadieux=04%7C01%7Cbrent.wood%40niwa.co.nz%7Ce4a84a1760b94c5753bf08d97ed16712%7C41caed736a0c468aba499ff6aafd1c77%7C0%7C1%7C637680260176856431%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000=PxPRTfSCzkt4cJGC1hkQ%2FNCyxLi%2B6auZhjfB1NEdn4s%3D=0>

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<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] On the capabilities of QGIS

[Brent Wood]

Hi Jennifer from West Island,
from someone else from down under.

I'm not sure this is a simple exercise, or that you'll get any better precision 
than 0.3%, but...

I'd grab any reasonable world map dataset, natural earth, GSHHG, etc...
https://www.naturalearthdata.com/
http://www.soest.hawaii.edu/pwessel/gshhg/

Also look here for other data:
https://www.justmagic.com/GM-GE.html
https://argo.ucsd.edu/data/data-visualizations/marine-atlas/

Info on ship locations is pretty widely available from sites like:
https://www.vesselfinder.com/historical-ais-data#position_data

for data on territorial seas, EEZ's etc, to refine your area calculations:
https://marineregions.org/downloads.php


Open the coastlines in QGIS.
Create a new, empty polygon layer, and make it editable.
Draw new polygons covering the regions you'd want to deploy the buoys. Up to 
you how precise they are.
Remove (difference) any EEZ or territorial sea regions you feel appropriate
Get the remaining cumulative area of the polygons.
I think there are plenty of guidelines on how to do this sort of things, or 
feel free to contact me direct if you have questions.

Current & wind info is around - see the tracks of ARGO floats as one case in 
point

But note:

  1.  The bouys would need to NOT be a hazard for shipping.
  2.  Controlling stability (direction of reflection) could be problematic.
  3.  The reflected light would need to NOT be a hazard to overflying aircraft.

And a question - why would these mirrors only be deployed at sea? The warming 
is happening to land as well. Surely there are substantial areas of land that 
could be used in the same way with minimal ecological or social damage - 
thinking of Australia, Africa, South America, Middle & Far East. Like carbon 
credits - set up solar reflective farms to offset climate change.

Cheers

Brent Wood


 G'day there, all,

QGIS just discovered. Oh. Wow.

Jennifer of Chermside Oz here, with two questions of a very generic nature. 
Sorry.

Before I commit a big slice of my remaining life-span trying to mistress GIS 
via Q, can I ask:

1/ is Qgis in tandem with any known DB capable of providing me an accurate 
fine-grained result on the area of just the oceans, all of them, 360° round, 
that lie between the ancient Greeks Tropic zone, in my case either ±45° lat or 
±50°. It's the granularity that I need.  (2° grid good, tighter ideal.)

2/ if Yes, what would be your rough assessment of the time it would take 
for this tech-head, in Mac since Syst 0.9 ancient crone, who is not fluent in 
any code or  language to pull out an answer, or

3/ again if Yes, and faster, is anyone willing to give this poor pensioner 
(cue the strings & harps) a price on your digging out this data?

This because I believe that after 20 years of head scratching after the shock 
of first seeing the 200 year plot of CO2 in the atmosphere, and being an old 
radio tech recognizing a +ve feedback curve, think that with my 5th concept 
(four failures) I've gotten a winner that should stop ocean heating.

Reflecting enough incoming insolation back out to level the EEI, and perhaps 
even reversing the heat build up. All done with 98% reflective buoys launched 
at strategic points onto passing currents, so they stay mostly in the Tropic 
zones. I need a scientifically valid referable source of accurate areas data to 
calc how many bouys are needed. All CC & open source, so not much followup cash 
flow.

Hope someone can see a solution. Short of measuring my old 300mm inflatable 
home globe!
Google Earth has proved accurate to establish gross areas (+0.3%, my measuring, 
10° x 10° grids.)
Need far better info, so as to not be dismissed out of hand.

Cheers

Jen

Ms Jennifer Cluse  35 Reinhold Cres  Chermside  Qld  4032  Australia  UTC+10
t:  07 3359 5352 (msg)  Intl: +61 7 3359 5352   m:  0447 400 470   e:  jencluse 
et iinet + net & au
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Re: [Qgis-user] noobs -- question

[Brent Wood]

 Yep, I think Alexandre is correct.

Change this to:
create table bidule (id serial primary key, libelle text, geog 
geography(multipolygon, 4326));
or, given you already have the table:
alter table bidule add constraint bidule_pk primary key (id);


You might find this link 
useful:https://www.cadlinecommunity.co.uk/hc/en-us/articles/36579817-PostGIS-Why-can-I-not-edit-my-PostGIS-data-within-QGIS-
Cheers


On Monday, March 8, 2021, 1:58:12 PM GMT+13, Marc Millas 
 wrote:  
 
 Hi,
create table bidule (id serial, libelle text, geog geography(multipolygon, 
4326));

as simple as possible :-)
thanks for your help !


Marc MILLASSenior Architect+33607850334www.mokadb.com


On Mon, Mar 8, 2021 at 1:25 AM Alexandre Neto  wrote:

Hello Marc,
Can you share your table SQL definition?
My gut feeling is that you might not have a unique identifier column.

Alexandre NetoQGIS Supportwww.cooperative.net

On Sun, Mar 7, 2021 at 9:51 PM Marc Millas  wrote:

Hi,I may be missing something more than obvious, but ...QGIS 3.16 on win 10, 
postgres 12 with postgis 3.1 (same, machine (intel core i9, 64 GB ram, 6TB 
SSD))a postgis table with a column geography(multipolygon, 4326)-no pb to 
display this as a layer over whatever map (OSM standard as an exemple).-no pb 
in qgis to go to edition mode, and add a few new polygons, edit the table 
fields and save. fine.When I want to edit (ie. change..) one of the existing 
polygons, I:--ask to go to edit mode with right click on that postgis 
layer--select one of the existing polygons, (after choosing the select entity 
icon)--??? according to the doc, I should click on the edit node icon. Which is 
grayed.the qgis postgres user have all rights to write (proof by the inserts 
done)
So.. there is something obvious somewhere, but I need some help to guess where 
:-)thanks for your help,regards,

Marc MILLASSenior Architect+33607850334www.mokadb.com
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Re: [Qgis-user] QGIS 3.10

[Brent Wood]

See: https://qgis.org/downloads/ for a big list of Windows installers for old 
versions of QGIS

Choose whichever 3.10 version you want!

Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Amy Norwood 

Sent: Friday, March 5, 2021 14:20
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] QGIS 3.10

Does anyone know where I can find the 3.10 version of QGIS?  It’s needed for a 
school project. Thanks!  Amy Norwood

Sent from my iPhone
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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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Re: [Qgis-user] how to find center of polygons and/or major and minor diameters

[Brent Wood]

This may be a suitable approach, not specifically the ellipse axis approach, 
but:


Vector -> Geometry tools -> Centroid

may do what you want, depending on exactly how QGIS calculates the centroid...



Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Azzurra 
Lentini 
Sent: Wednesday, January 13, 2021 08:04
To: qgis-user 
Subject: [Qgis-user] how to find center of polygons and/or major and minor 
diameters

Hi to all, any suggestion on how to quickly draw the minor and major diameters 
of different polygons? I have a shapefile of polygons: some of the polygons are 
ellipses and others are similar to ellipses but not regular.

My aim is to find the center of these polygons (In this aim I was thinking to 
draw the 2 diameters and to use the intersection of these diameters as a center 
point of the polygon)

Thanks, Azzurra

--
Lecturer GIS University "Roma Tre"
Consultant Environmental Risk Prevention and Hydrogeology
AZZURRA LENTINI
++
Italy Mobile Tel.: **(39) 338 24 40 676
++
SKYPE azzurrahydro
++

azzurralent...@gmail.com<mailto:azzurralent...@gmail.com>

azzurra.lent...@uniroma3.it<mailto:azzurra.lent...@uniroma3.it>

++
*Par respect pour l'environnement,*

*n'imprimez ce mail qu'en cas d'absolue nécessité*





[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Qgis-user mailing list

[Brent Wood]

You should be able to intersect the two layers, but may have issues if they are 
in different CRS's, or there are topological errors present.

If they are in different CRS's, then export one to the CRS of the other, and 
generate the intersection with that one.

Also run Vector-> Geometry tools -> Check validity on each source layer to 
ensure the data is valid.

The result should be a layer that has all the polygons from one split by the 
other to form new polygons common to both layers, and with each of the new 
polygons having all the attributes from both original layers.

Note that if you need to include the areas in the source layers that are not 
common to both, you'll need to get the differences between the layers (both A-B 
& B-A) and add these to the intersection.

Note that this is essentially a spatial data management question, and while 
QGIS can do it perfectly well, I find it can be easier to manage the data in 
Postgis tables in a database, and use Postgis SQL statements to do this, using 
QGIS to see the resulting data in the map canvas.

Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Per-Ove 
Persson 
Sent: Monday, January 11, 2021 09:37
To: Qgis-user@lists.osgeo.org 
Subject: [Qgis-user] Qgis-user mailing list


Hi !

I am very new user of QGIS. And now have I run into difficulties.

Use the QGIS version 3.10.10

I try to combine two layers in order to receive agriculture area per different 
municipalities

It seams that I do something wrong because I am not able to do that.

Do somebody have any nice and clever solution in order to solve this I would be 
grateful



Best Regards

Per-Ove Persson



[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Vote for Lat Lon Tools Default Coordinate Order - YX or XY

[Brent Wood]

1. "lat/lon"  is the world wide order for degree based maps (esp in the 
navigation space)
2. "Lat Lon is the name of the tool, 

It doesn't make any sense (to me) to have lon/lat as the default order for this 
tool. I know some other GIS tools use lon lat to be consistent with northings & 
eastings which are XY, but with this tool being all about lat/lon, I figure 
that is how it should be. 

One option - if you are really concerned about this. Prompt on first use to set 
the user's preferred default? Make it impossible for the user to use the plugin 
without having first chosen what they want the order to be. So it doesn't have 
a default, just a user selected order.
Cheers

My 02c


> It was suggested to me that the default coordinate order in the Lat
> Lon Tools plugin for coordinate capture and zoom-to tools should be
> "longitude, latitude" or "X, Y". Originally, Lat Lon Tools was
> designed to work with on-line maps which are generally "latitude,
> longitude" order.
> 
> You can always go into the plugin settings and specify which order
> you want and that order will be preserved everytime you launch QGIS.
> The default order is only applicable the first time you install "Lat
> Lon Tools" or if you do a reset to defaults in the Lat Lon Tools
> settings menu,
> 
> Who prefers Lat Lon Tools to default to "longitude, latitude" or "X,
> Y" when the plugin is first installed or reset to default values?
> 
> Who prefers Lat Lon Tools to default to "latitude, longitude (Google
> map order)" or "Y, X" when the plugin is first installed or reset to
> default values?
> 
> I'm just checking to see if I should make this change or not.
> 
> Thanks,
> 
> Calvin








  Roxo

-- 
 Non luctari, ludare ---+ WYSIWYG
Fernando M. Roxo da Motta               | Editor?
Except where explicitly stated I speak on my own behalf.|  VI !!
                PU5RXO                                  | I see text,
 Quis custodiet ipsos custodes?-+ I get text!
 
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Re: [Qgis-user] Historical data in QGIS-PostGIS

[Brent Wood]

I think this is straightforward, if I understand you correctly...

Assuming each year comprises a separate version of the data, have the year as a 
column in the table, which allows you to select by year, group by year in the 
database, on an indexed integer value, which is very fast.

In terms of displaying as layers in QGIS, there are two approaches which should 
work, which one is better is something you'd need to work out for your use case:

  1.  Open the table, apply a filter for just the desired year(s). Rename the 
QGIS layer as the year(s) to avoid confusion later. Apply whatever symbology 
you desire. Repeat for each year (or set of years) that you want to plot. This 
gives very good control of each year (set) of data as a separate layer, but can 
be complicated with many years (layers) of data.
  2.  Open the table and set the layer symbology to categorised, then 
categorise by the year column. You have a single layer, but can set the 
symbology for each year and turn individual categories (years) on/off as 
desired. Not quite as powerful as completely separate layers, but much easier 
when you have lots of categories.

I'm not sure how much data you have, but if you have 100's of millions of 
records, using Postgis to manage geometries, Timescaledb to manage timeseries 
data and hstore or JSONB to manage multiple readings per sample (depending on 
just what your data are) can give huge space & performance benefits. (I have 
just done this with a sensor dataset of 1.2b readings)

Something else I have done that you may find useful. You can write R functions 
to use as SQL using PL/R. This means you can select data & generate a plot 
directly from Postgres SQL - just run the SQL & then look at the output 
graphic. If you have the image open & generate a new graphic via SQL, at least 
on Linux, the image viewer recognises the change & refreshes the screen. This 
is MUCH easier & faster than any other way I have tried to visualise my data 
directly from a database.


Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Vanildo Heleno 
Pereira 
Sent: Saturday, November 14, 2020 12:11
To: qgis-user@lists.osgeo.org 
Subject: [Qgis-user] Historical data in QGIS-PostGIS

Hello everyone.
I would like to know if there is a possibility to work with historical versions 
of geographic data in QGIS / PostGIS?
The geometries need to be stored in a single database table (PostgreSQL) and 
you will receive data (new records from the same location) annually and I need 
to visualize each one in a different layer.
Thanks and regards.
Att.
Vanildo Heleno

[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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Re: [Qgis-user] Show multiple photos attached to one feature

[Brent Wood]

Hi Sophia,

I suggest you set up a QGIS Action on the layer to view the images for a 
feature.

For a single feature, your data needs to contain a field with all the image 
names space separated (so no whitespace within names unless you want to make 
life difficult!!).

The action will be a batch file (Windows - painful, or Powershell) or script 
(Linux/Mac - easy) concatenate the path to each filename, then open each file 
with an image viewer.

eg:
a point feature has this text as a field (called filename):
P1010005.JPG P1020700.JPG
(the names of two pictures associated with the point feature)

I write a simple shell script (I'm on Linux) to iterate through a list of files 
(I called it open_images):
#! /bin/bash
#
# iteratively opens images passed on the command line
#
FILES=$@

for FILE in $FILES ; do
eom /home/baw/Pictures/$FILE
done

The bash script sets the "$FILES" variable to store the list passed on the 
command line ($@)
It then uses the eom program (simple Linux image viewing program) to 
iteratively open each file in the list,
  prepending the path to the file for each one.

In QGIS, I create an Action on this layer called "open image", it contains the 
command:
/home/baw/qgis/open_images [%filename%]
This is the path to my my script, followed by the list of image names.

So, if I then select the action tool in QGIS, when I click on a feature on the 
canvas, QGIS runs the command as set up in the action, which is my script. It 
passes the contents of the "filename" field for the feature as a command line 
parameter. (essentially runs the command: /home/baw/qgis/open_images 
P1010005.JPG P1020700.JPG

The script then shows the first file, then the second, etc. whenever you click 
on a feature in QGIS. You can have a list with as many images per feature as 
you like (within reason... 3 might be a problem!!


Hope this helps, I find the Action tool very useful for this sort of thing. Not 
quite as easy in Windows, which is not primarily a command line setup, but can 
still be done.


Cheers

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of chris 
hermansen 
Sent: Saturday, October 17, 2020 16:20
To: sophia couchman 
Cc: qgis-user 
Subject: Re: [Qgis-user] Show multiple photos attached to one feature

Sophia and list,

On Fri, Oct 16, 2020, 06:20 sophia couchman 
mailto:choccycouch...@iname.com>> wrote:
Hi All,

I have mapped individual trees in a wood using QGIS and QField in a Layer 
called Trees.  Each Tree/Feature contains a number of fields.  I included a 
field for taking photographs and for each tree I took a number of photographs, 
anywhere from 2 to 6.

I then brought the QField data onto the computer.  When I right click on an 
individual feature using the Identify Features arrow the Identify Results box 
appears.  It contains all the fields including the photo field but this 
contains only one photograph in this format- DCIM/trees_20201010165100197.jpg 
but not the rest.  How can I have the rest of the photographs listed here too?

I think that if you have up to six photos you are going to need up to six 
fields to put them in, are you not?

Alternatively you could have a oneto zero or many relationship between your 
tree table and a separate photo table, which may be more difficult for you to 
manage.

Some databases will support an array of items but not sure if / how that is 
manifested in QGIS.

Chris
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] Intel vs AMD

[Brent Wood]

 This one is known to be problematic: 
seehttps://www.phoronix.com/forums/forum/hardware/graphics-cards/1135054-msi-alpha-15
none of the issues they describe relate to the cpu itself, as far as I can 
tell, so how much an AMD vs Intel issue I'm not sure. Generally wifi is most 
problematic, along with sleeping, power mgmt & such
If you are looking at trying Linux on a laptop, check the model for known 
problems:
https://linux-laptop.net/https://linuxhint.com/linux_laptop_buyers_guide_2020/
or just google linux & laptop model.

I can endorse the brands recommended in the second site... I pretty much 
exclusively run Dell & Lenovo laptops for Linux these days. Currently 4 Dell 
(12", 13" & 14" screens i5 & i7) & one Lenovo laptop (14" i7), in addition to a 
Xeon workstation & Ryzen general purpose system. 

Laptops bought used for NZD300-400, and toss an SSD in to replace a HDD if it 
has one.


Cheers,
  Brent






On Thursday, September 10, 2020, 6:32:33 PM GMT+12, Carlos López PSIG 
 wrote:  
 
 Hi,Be careful with AMD and Linux, I had a lot of problems with 
drivers...Finally, I installed Windows (OMG!) because I had a lot of problems, 
graphic, battery, wifi, etc...I bought this laptop 
MSI:https://www.msi.com/Laptop/Alpha-15-A4DX

Cheers,

PSIGImplementació, gestió i formació SIG
Carlos López Quintanilla

www.psig.escarlos.lo...@psig.es
+34 699.680.261

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ad...@psig.es


El mié., 9 sept. 2020 a las 22:41, Brent Wood () escribió:

 Hi,
Not specifically AMD vs Intel, that is pretty much irrelevant. It more depends 
which cpu (how powerful/fast, how much memory & how big & how fast the disk. 
Lower end laptops can struggle with significant processing tasks. Also do you 
run Windows or Linux? Linux compatability can be an issue, but much less than 
it used to be.

I have done very well for years picking up recycled ex-lease laptops for 
QGIS/Postgis etc... I reckon a good business quality laptop that came with a 3 
year warranty when new, is 4-5 years old & has a used warranty for 6-12 months 
is generally a much better buy than a new consumer grade laptop with a 1 yr 
warranty.
A quick search found a few refurbished sellers in Perth (I'm in New Zealand so 
can't advise on vendors there), 
like:https://www.recompute.com.au/refurbished-laptops/https://www.reboot-it.com.au/used-laptops

Cheers,
  Brent Wood

On Wednesday, September 9, 2020, 2:07:56 PM GMT+12, Maria Niermann 
(23153112) <23153...@student.uwa.edu.au> wrote:  
 
 Hi

Anyone got word as to any issues that might arise going AMD processor on a 
laptop?

Thanks

Maria Niermann
MSc Hydrogeology

Studying - MScEnvSc CATWA at UWA (Environmental Science - Catchment & Water)
University of Western Australia
School of Agriculture and Environment
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Re: [Qgis-user] Intel vs AMD

[Brent Wood]

 Hi,
Not specifically AMD vs Intel, that is pretty much irrelevant. It more depends 
which cpu (how powerful/fast, how much memory & how big & how fast the disk. 
Lower end laptops can struggle with significant processing tasks. Also do you 
run Windows or Linux? Linux compatability can be an issue, but much less than 
it used to be.

I have done very well for years picking up recycled ex-lease laptops for 
QGIS/Postgis etc... I reckon a good business quality laptop that came with a 3 
year warranty when new, is 4-5 years old & has a used warranty for 6-12 months 
is generally a much better buy than a new consumer grade laptop with a 1 yr 
warranty.
A quick search found a few refurbished sellers in Perth (I'm in New Zealand so 
can't advise on vendors there), 
like:https://www.recompute.com.au/refurbished-laptops/https://www.reboot-it.com.au/used-laptops

Cheers,
  Brent Wood

On Wednesday, September 9, 2020, 2:07:56 PM GMT+12, Maria Niermann 
(23153112) <23153...@student.uwa.edu.au> wrote:  
 
 Hi

Anyone got word as to any issues that might arise going AMD processor on a 
laptop?

Thanks

Maria Niermann
MSc Hydrogeology

Studying - MScEnvSc CATWA at UWA (Environmental Science - Catchment & Water)
University of Western Australia
School of Agriculture and Environment
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Re: [Qgis-user] how show themes from single polygon having rainfall time series data

[Brent Wood]

One way that might work for you, see the QGIS action tool.

Create a system invoked R script that plots the time series for a specified 
polygon, taking the polygon ID as a parameter on the command line.
Then create a QGIS action that invokes the script & passes in the polygon ID.

I have done something similar with Postgis/QGIS & R - the R function was 
embedded as a PL/R function inside the database, so the SQL generated the plot 
of the data (rather than just retrieving the data). The SQL created the plot & 
returned the filename of the plot it just created.

This worked on both a web site & from QGIS (QGIS on Linux & Windows both 
worked, but the script was a bit different on each)

HTH,

Brent Wood

Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of shrawan 
tripathi 
Sent: Monday, March 23, 2020 08:12
To: qgis-user
Subject: [Qgis-user] how show themes from single polygon having rainfall
time series data

Hi,
I want to show rainfall distribution for a time series for a single polygon, is 
it possible?
if yes please let me suggest.

--
Warm regards
Shrawan Kumar Tripathi

[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
 Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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Re: [Qgis-user] digitizing tools

[Brent Wood]

Have you tried to enable the toolbar?

View -> Toolbars -> Advanced Digitising Toolbar

It is off by default


HTH

Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Boaz Bar Ilan 

Sent: Saturday, March 21, 2020 21:46
To: qgis-user
Subject: [Qgis-user] digitizing tools

hi

I cant work with the  advance digitized tool
the icon is not on , and  I cant find the plug in re installer

thanks
boaz
[https://www.niwa.co.nz/static/niwa-2018-horizontal-180.png]<https://www.niwa.co.nz>
 Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529 |
National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
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To ensure compliance with legal requirements and to maintain cyber security 
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[Qgis-user] QFIS WFS error msg help please

[Brent Wood]

Hi,
I'm setting up mapserver to provide WFS services to be consumed by QGIS. The 
capabilities doc works fine from a browser, and connecting from QGIS I get the 
available layer listed fine, so QGIS works fine with the WFS to at least get 
the capabilities doc.
I get an error when trying to retrieve the layer, and have found a few 
references but nothing helpful. I need help interpreting the QGIS error before 
I can attempt to fix the error in the mapfile (if there is one). 
Error msg: (same in QGIS 2.18, 3.4, 3.10)

2020-03-19T11:52:38 1 Analysis of DescribeFeatureType response failed for url 
srsname='EPSG:4326' typename='ms:Specimens' 
url='http://wellmapsrvdev.niwa.co.nz/cgi-bin/mapserv?map=/usr/lib/cgi-bin/mapfiles/specify.map'
 version='auto' table="" sql=: it is probably a schema for Complex Features



Any advice appreciated...
Brent Wood

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[Qgis-user] custom CRS issue

[Brent Wood]

Hi,
I have been using a custom Albers Equal Area for gridding data for some years - 
setting it up in Postgis, R & QGIS. 
+proj=aea +lat_1=-30 +lat_2=-50 +lat_0=-40 +lon_0=175 +x_0=0 +y_0=0 
+ellps=WGS84 +datum=WGS84 +units=m +no_defs

It is still working fine in my old QGIS 2.18, and in Postgis v2.4.eg (with this 
projection added to spatial_ref_sys as #27201):
select 
ST_ASText(ST_Transform(ST_SetSRID(ST_MakePoint(175,-40),4326),27201));(returns)POINT(0
 0)
I have installed QGIS 3.10 and it rejects this definition - "This proj 
projection definition is not valid" and just says ERROR when testing it with 
175/-40 (which should give the 0,0 coords that both QGIS v2.18 & Postgis v2.4 
return)

This was ratified as EPSG::9191 last year - and I can't see why it fails.
Any advice appreciated!!
Thanks,
  Brent Wood___
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Re: [Qgis-user] [QGIS-Developer] Thoughts on QGIS Development and LTR Releases

[Brent Wood]

I'd also like to toss in my preference for a 2 year LTS. My reasons are similar 
to others who have al;ready posted.

I've been using QGIS since v0.2, and running QGIS training workshops annually 
for several years now. While the new capabilities are great, I find users are 
frustrated in that they have difficulty keeping up - no sooner do they become 
comfortable with a version & they need to upgrade.

People coming on my workshops are running various versions, and so some things 
work & others don't. I run 3.4, 3.10 (& still 2.18) as well as the nightly 
builds at times... so appreciate the benefits & issues of the current situation.

IMHO, the extra stability of a longer term LTS will, overall, be beneficial.


Thanks

Brent Wood



Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


From: Qgis-user  on behalf of Ben Hur Pintor 

Sent: Sunday, March 1, 2020 17:41
To: Alexandre Neto
Cc: QGIS User; qgis-developer
Subject: Re: [Qgis-user] [QGIS-Developer] Thoughts on QGIS Development and  
LTR Releases

Hi everyone,

I'm not a QGIS developer but I've been a user since 1.X days. Aside from a few 
quirks (e.g. dependency issues on Linux), I've always liked the QGIS release 
cycle so I'm coming from that perspective.

To add to Alexandre's explanation, this is usually how I explain QGIS releases:
There are 3 branches of development - LR (Latest Release), LTR (Long Term 
Release), and nightly builds. Let's take a look at the LR and LTR branches.

I usually take "maintained" to mean that the branch is actively developed -- 
bugs will be fixed, new features are added, etc.

The LTR (now 3.10.3) is maintained until the next LTR (in 12 months when 3.16.4 
becomes the LTR). During those 12 months, a PR (Point Release) will be released 
for the LTR branch each month (named 3.10.4, 3.10.5, ..., 3.10.14). This PR 
includes the bug fixes for 3.10.X. Being an LTR means that there (usually) 
won't be any changes that will break that version in 1 year. This is usually 
why people think of LTR as "stable".

The LR (now 3.12.0) contains the most recent features of QGIS. A new LR is 
released every 4 months. The next LR (3.14) is slated to be released in June 
2020, the next after that is 3.16 in October 2020. The 2nd LR released after 
the release of the LTR is the version that will become the next LTR. In this 
case, the 3.16 version that will be released in October 2020 is slated to 
become the LTR after 4 months (e.g. 3.16.4 will become the LTR by February 
2021). For each month, a PR is also released for the LR branch until a new LR 
is released. For example, there will be a 3.12.1, 3.12.2, and 3.12.3 releases 
for March, April, and May 2020 until the 3.14 release in June. This repeats for 
3.14.1,..,3.14.3 until the 3.16 release in October. Throughout the year, there 
can be big changes between LR versions (e.g. between 3.12, 3.14, and 3.16) as 
compared to the LTR which stays at 3.10.X. It's also worth noting that useful 
features in the LR branch can be backported (added to) the LTR branch.

The "LR/PR" released every 4 months denotes that the release is a new LR. The 
"LTR/PR" released in October denotes that this release will be the next LTR. It 
is not put in the LTR repo until 4 months later (February) where it officially 
becomes the LTR.

We can also think of it this way:
For the LTR branch, you can expect updates every month of its life (or with 
every point release) with 3.10.3, 3.10.4, 3.10.5, ..., 3.10.14 but these will 
usually be minor and not so drastic.
Meanwhile, there may be drastic and major changes between LRs like 3.12, 3.14, 
3.16, etc. but only minor changes between PRs of the same LR -- eg 3.12.1 and 
3.12.2, 3.14.1 and 3.14.2, etc.

I also agree that the road map found at 
https://www.qgis.org/en/site/getinvolved/development/roadmap.html<https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.qgis.org%2Fen%2Fsite%2Fgetinvolved%2Fdevelopment%2Froadmap.html=02%7C01%7Cbrent.wood%40niwa.co.nz%7Cdf484ed7b9284ad3254508d7bd9af506%7C41caed736a0c468aba499ff6aafd1c77%7C0%7C0%7C637186345604237900=VK6ZNQWbKIOODtsJ04mS5FTZhF8Nyz4AGCUgo5shC54%3D=0>
 is geared a lot towards dev people but, in its defense, it is located under 
the "Get Involved/Development" part of the documentation.

If I have misrepresented or misunderstood anything, please don't hesitate to 
correct me.


All the best,
Ben Hur

On Sun, Mar 1, 2020 at 12:13 PM Alexandre Neto 
mailto:senhor.n...@gmail.com>> wrote:
Hi Groene,

I agree that the Road map is not easy to understand. Just to clarify things (I 
hope):

The current LTR is 3.10 (currently at 3.10.3). It only became LTR in February 
although its first release was done in october (3.10.0). The idea is to let it 
mature (and have a broader usage and tests) for at least 4 months before it 
becomes LTR.

This me

Re: [Qgis-user] Is location info included in metadata when save an image file?

[Brent Wood]

JPG images can only store a gps location internally, not the geographic extent 
of the image.

TIFF is the only conventional raster image format which supports internal 
geographic extent metadata.


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529



[cid:image2643d9.PNG@f79ed398.42a8a704]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Fernando M. 
Roxo da Motta 
Sent: Tuesday, June 4, 2019 11:13
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Is location info included in metadata when save an 
image file?

On Mon, 3 Jun 2019 11:01:06 -0300, Kirk Schmidt
 wrote:


> Hi Ert:
>
> You can save locational data in jpg and pdf files from within the
> Print Composer window.  Under composition tab on the right hand side
> of the window, scroll down and check the Save World File checkbox.
> Export your map/composition as a jpg or pdf and the geolocation data
> will be written to a world file for a jpg and internally for a pdf.

 Just to be sure that I understood it correctly.   If I save as jpg
the geolocation information will be only written to the world file if I
check the Save World File checkbox.   That means that, regardless to
check or not that checkbox, the jpg image will not contain any
geolocation information.

 Is that correct?


>
> Good luck
>
> Kirk Schmidt
>
> On 6/2/2019 4:26 AM, Ert Four wrote:
> > Thank you Alex and Roxo for your replies.
> >
> >  From what I can tell the SVG and JPG files probably don't have
> > location info in them, but it's also hard to tell what exactly the
> > data is in some places, especially in the SVG.
> >
> > It looks like qgsmaprenderertask.cpp was written two years ago,
> > which was after 2.14 came out.
> >
> > I will post on the developer list per Alex's suggestion. All of
> > this is trying to prove that something doesn't exist -- which is
> > always hard.
> >
> > Thanks again.
> >
> >
> >> On June 1, 2019 at 4:41 PM "Fernando M. Roxo da Motta"
> >>  wrote:
> >>
> >>
> >> On Thu, 30 May 2019 17:09:59 +0200 (CEST), Ert Four
> >> <4...@mailbox.org> wrote:
> >>
> >>
> >>> Does any coordinate or location data get embedded in the image
> >>> file if I use Project > Save as Image or Composer > Export as
> >>> Image/PDF/SVG?
> >>>
> >>> I'm using QGIS version 2.14.3 Essen, although I would like to know
> >>> about more recent versions, too, for when I upgrade later.
> >>>
> >>> (I'm aware of the option to check "World file on" and create a
> >>> separate world file. What I need is to make sure there is no
> >>> identifying info whatsoever from the project file in the image
> >>> file itself.)
> >>>
> >>> Eg, say I have a basemap like OpenStreetMap open for a country
> >>> and I load points in another layer that are inside that country.
> >>> Then I zoom in on a group of points from my data layer, I turn
> >>> off the basemap layer, and make a map with just my data points. I
> >>> want to preserve the relative spatial relationships between my
> >>> points but not reveal where in the world the map came from. If I
> >>> publish this image file, might the metadata reveal the location?
> >>>
> >>> For the work we do, it's critically important we not unknowingly
> >>> publish specific locations.
> >>>
> >>AFAIK, if you save in PNG or JPEG format no coordinate
> >> information is stored in metadata of the image:
> >>
> >> $ exiftool Inhambu.jpg
> >> ExifTool Version Number : 10.80
> >> File Name   : Inhambu.jpg
> &g

Re: [Qgis-user] Fw: KMZ

[Brent Wood]

Save project as image - teh image (of the current map canvas) will be 
georeferenced (possibly with an accompanying world file)


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:image32b2e3.PNG@b08d6d79.418d88c3]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Lukas Sadler 

Sent: Monday, May 20, 2019 14:58
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Fw: KMZ

another question, pretty please

how does one export a clip of a base map layer as a reference jpeg/Tiff

I've tried 'clip raster by extent' but when i run it it says 'layers were not 
correctly generated'





- Forwarded Message -
From: Lukas Sadler 
To: qgis-user@lists.osgeo.org ; Brent Wood 

Sent: Monday, May 20, 2019, 2:39:05 PM GMT+12
Subject: Fw: [Qgis-user] KMZ

Okay

I got it to work

project and base map layer needs to be in WGS 84/Pseudo-Mercator with KMZ file 
set as WSG 84





- Forwarded Message -
From: Lukas Sadler 
To: qgis-user@lists.osgeo.org ; Brent Wood 

Sent: Monday, May 20, 2019, 2:26:16 PM GMT+12
Subject: Re: [Qgis-user] KMZ

thanks guys

but still not doing the trick

I've got everything in 4326 and the KMZ is still not sitting in the correct 
location

the location is in New Zealnd but if i use 4326 it looks like it sits on the 
opposite longitude





On Monday, May 20, 2019, 2:14:17 PM GMT+12, Brent Wood  
wrote:



I think KMZ supports lat/long coords only... Google doesn't really understand 
projections...


Make sure your KMZ layer has EPSG:4326 as its projection


HTH


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:265101fe-b096-bac2-7122-686f70596ff5@yahoo.com]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Lukas Sadler 

Sent: Monday, May 20, 2019 13:45
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] KMZ

Hi,

I've tried importing KMZ files from google earth into a project on QGIS (3.6.3 
Noosa) but the files don't project in the same location even if i set it to the 
project's CRS

what should i do to have the KMZ files projecting in the correct location






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Re: [Qgis-user] KMZ

[Brent Wood]

I think KMZ supports lat/long coords only... Google doesn't really understand 
projections...


Make sure your KMZ layer has EPSG:4326 as its projection


HTH


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:imagef39a2d.PNG@780f91f3.4bbb007d]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
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From: Qgis-user  on behalf of Lukas Sadler 

Sent: Monday, May 20, 2019 13:45
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] KMZ

Hi,

I've tried importing KMZ files from google earth into a project on QGIS (3.6.3 
Noosa) but the files don't project in the same location even if i set it to the 
project's CRS

what should i do to have the KMZ files projecting in the correct location



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Re: [Qgis-user] SCP

[Brent Wood]

Please provide some details - the version of QGIS and any error messages.


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:image009d9b.PNG@8c932348.4aa6e05f]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Nalisoa 
Maheriniavo Fleurette 
Sent: Wednesday, April 10, 2019 07:00
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] SCP


Hello,
There was an error on installing the SCP plugin.
What should I do,please?
Thank You.



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Re: [Qgis-user] (no subject)

[Brent Wood]

To add a point, you need to create  a new empty point layer and make it 
editable, so QGIS has somewhere to write the points to.

If you already have a layer to add to, then open that & make it editable 
instead of creating a new layer.


If you are digitising features, you might also enable the digitising & advanced 
digitising (if appropriate) toolbars. (View -> Toolbars on the main menu bar)


A DXF has vertices defined by coordinates. You need to tell QGIS what 
coordinate reference system these coordinates use.



In general, there is a welth of help for this stuff already out there - Google 
is your friend (in this case :-)

If you google for "how to add points in qgis" there are on line videos, 
tutorials, etc... should provide all you need to know...


The same applies to almost any task in QGIS, that is how I justy found a plugin 
you can install, just click on "Plugins" and once

QGIS had downloaded the list of available plugins, search for DXF to find 
"Another DXF Importer / DXF2Shape Converter"



Hope this helps


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:imagee98db1.PNG@c26a15af.47bdbe75]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Dickson 
Taunagita 
Sent: Sunday, January 27, 2019 11:24:12 AM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] (no subject)


Hi,

I just downloaded QGIS 3.4.4 and currently (trying to) teach myself and need 
some assistance.


  1.  How can I key in coordinates to add a point in QGIS 3.4.4?
  2.  I am currently experiencing an error in adding an AutoCAD dxf file in 
QGIS 3.4.4.  I am getting the "CRS was undefined ..." error.

Your assistance will be greatly appreciated.

Dickson






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Re: [Qgis-user] Project files with local and remote connections to postgreSQL databases

[Brent Wood]

This is not tested, but I think it should work

Enable host based access for local connections via the server IP address in 
your pg_hba file and use this for all QGIS access, so you apply the same access 
approach for both local & remote connections.


Cheers

Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529



[cid:imagef6a2d5.PNG@d3805356.4e8e0b4a]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Laurence 
Béchet 
Sent: Friday, January 11, 2019 13:04
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Project files with local and remote connections to 
postgreSQL databases

Hi,

I am having a basic problem with my project files. I usually run qgis
locally, where the PostgreSQL database is. However, sometimes I need to
have these same projects run on a remote computer (where a version a
qGIS is locally installed, but the connection to the database is
remote). And then the project file 'doesn't work' because the expected
connection to the database is locally not remotely, and I have not
figured out how to modify this parameter when the project is loaded in
qGIS. My current work around is to create a specific project for the
remote computer.

However this solution is annoying when you have plenty of composers that
you lose in the process ... and playing directly in the xml project file
is a bit scary ...
Anybody would have an idea how to fix the problem?

Kind regards
Laurence Béchet
ARK IN THE PARK Volunteer Co-Ordinator
Cascades Ranger Station
Falls Road, Waitakere
Phone:  (09) 810 7014

www.arkinthepark.org.nz www.forestandbird.org.nz




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Re: [Qgis-user] QGIS Live GPS Tracking Settings (QGIS 2.14)

[Brent Wood]

Hi Malhar,


I'm currently looking to fund a QGIS developer to add the ability to 
(optionally) save the GPS timestamp along with the point feature.


If you also have work you'd like done in the GPS panel, I think we could 
perhaps save costs by collaborating on a single upgrade for all our desired 
functionality? Please contact me if you are interested.




Note that you can sort of achieve your goals by recording the GPS data directly 
into a database (rather than a shapefile or non-RDBMS dataset). Then plot the 
data from this table instead of using the live GPS display.


You can then open a layer which has a SQL something like:


select * from table where timestamp > now - interval('10 minutes');


Then use the capability described here for that layer: 
https://github.com/qgis/QGIS-Documentation/issues/1683

This gives you the last 10 minutes data - or any interval you want, refreshed 
automatically as required



To use an SVG symbol such as an airplane for the current position, you can 
create a new point layer with a query like:

select * from table where timestamp = (select max(timestamp) from table);

This will always return just the latest point feature... and if the timestamp 
is indexed, it can do it pretty quickly.
Assign a suitable airplane symbol to the layer and set this layer also to 
redraw automatically.

Then assign the label for this point layer to be built up as a string with 
deg/dec min, then the latest position will always be written on the map in the 
format you want.


This would work with any of the 3 main open source spatial SQL databases 
(Postgis, MySQL/MariaDB/Spatialite) as it uses very standard SQL statements. I 
have done similar things in the past  with Postgis & Spatialite.


A lot of these sorts of issues can be treated as layers plotting subsets of 
data filtered & reformatted as required - so they become data management 
problems rather than live GPS data problems, and normal database functionality 
can be used to provide the required capabilities.



Hope this helps!!

Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:image23e6c9.PNG@6908ca10.46bab324]<http://www.niwa.co.nz>


Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Phil Wyatt 

Sent: Thursday, October 25, 2018 13:25
To: 'malhar'; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] QGIS Live GPS Tracking Settings (QGIS 2.14)

Hi Malhar,

No, I don’t believe there are any ways to edit the GPS information as per your 
requests. If these features are a high priority for you then maybe consider 
supporting a developer to make some changes to the base code to allow changes 
to the GPS and the trail. I suspect Lat/Lon is the standard for most GPS’s but 
again a developer may be able to set options for other NMEA sentences.

Cheers - Phil

From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of malhar
Sent: Wednesday, 24 October 2018 11:26 PM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] QGIS Live GPS Tracking Settings (QGIS 2.14)

Hello all,

I am currently using the QGIS (2.14) live GPS tracker for a project. I have a 
few questions regarding the settings for the live tracking feature.

1) Is there a way to change the latitude and longitude units from decimal 
degrees to degrees and decimal minutes in the "GPS Information Panel?"

2) Is there a way to change the symbol of a cross within a circle to an 
airplane?

3) Is there a way to change the trail of the aircraft so it only shows the 
previous 10 minutes of flight, yet have the log file show the entire flight 
route?

Thank you very much for your help.

Sincerely,
Malhar



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Re: [Qgis-user] What Plug in does live GPS input in QGIS?

[Brent Wood]

HI,


The QGIS panel allows you to manually save individual GPS points to a currently 
open & editable point layer - a mouse click on the button does this. Upon 
saving a point, you will be presented with a dialogue box to enter the values 
for any fields (attributes) defined in the map layer.


There is also a check box in the pane to log the NMEA GPS data to file. You can 
then use a Python QGIS NMEA plugin (nmea2qgis2) to open the saved GPS NMEA data 
file, and optionally save as a shapefile. This is an experimental plugin, so 
you will need to enable these.


I just used this plugin today - and found a bug in the python code which 
incorrectly converts southern hemisphere latitudes to decimal degrees, but this 
is a simple fix, & I'll email the author to hopefully fix the code. Prior to 
this I used an awk script to convert the GGA lines in a QGIS GPS log file to 
points, with a counter allowing them to be ordered and easily turned into a 
line by another QGIS plugin (Points2One).



Hope this helps...


Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529


[cid:image28d6a3.PNG@8dea1a7a.47832349]<http://www.niwa.co.nz>
Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
T +64-4-386-0529

301 Evans Bay Parade, Greta Point, Wellington
Connect with NIWA: niwa.co.nz<https://www.niwa.co.nz> 
Facebook<https://www.facebook.com/nzniwa> Twitter<https://twitter.com/niwa_nz> 
LinkedIn<https://www.linkedin.com/company/niwa> 
Instagram<https://www.instagram.com/niwa_science>

To ensure compliance with legal requirements and to maintain cyber security 
standards, NIWA's IT systems are subject to ongoing monitoring, activity 
logging and auditing. This monitoring and auditing service may be provided by 
third parties. Such third parties can access information transmitted to, 
processed by and stored on NIWA's IT systems.



From: Qgis-user  on behalf of Joep Orbons 

Sent: Wednesday, August 22, 2018 17:40
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] What Plug in does live GPS input in QGIS?

Hi all,
The QGIS plugin "GPS tools" imports and exports GPX files. But I need a plug in 
to live grab GPS data. I connect my GPS to an USB port. The GPS sends 
continuously an ASCII string with GPS data and I would like to visualise the 
live data on a QGIS map and store points when I hit a functionkey. A sort of 
surveyors tool. Anyone any ideas?
Thanks
Joep

[logo ArcheoPro Algemeen, Mailsize]
drs. ing. Joep Orbons
Senior Archeoloog, Senior Specialist Geofysica
St Jozefstraat 45, 6245 LL Eijsden
Tel: +31 43 3672586
email: j.orb...@archeopro.nl<mailto:j.orb...@archeopro.nl>
Web: www.archeopro.nl<http://www.archeopro.nl/>





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Re: [Qgis-user] GPS Live Tracking Problem

[Brent Wood]

Hi Don,


I use this regularly, but I save specific points by clicking on the plugin to 
do so. I do not normally save the track. I have a few suggestions...


You are correct, the displayed track is not normally saved, but I think you can 
tick the box to "Automatically add points" to save the points along the track. 
I'm not sure what the "automatically save added feature" does, but it is 
probably worth trying.


If you set QGIS up with an open & editable point layer, you can use the GPS 
panel to save points there, for each point QGIS will prompt you to fill in the 
attribute values before saving...





Brent Wood

Programme leader: Environmental Information Delivery
NIWA
DDI:  +64 (4) 3860529

From: Qgis-user  on behalf of Don Parks 

Sent: Monday, July 30, 2018 01:17
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] GPS Live Tracking Problem

Good Evening,

My name is Don Parks and I'm a new QGIS user and a novice at GIS.  I own a 
commercial farm and have used QGIS to develop a property map with layers 
containing roads, trails, fields, buildings, etc.  I would like to use my 
IPhone 8 as a GPS receiver to track movements live and have them appear 
digitized on a designated map layer and saved as a line feature on that layer.  
I would also like to establish waypoints this way as well.  The documentation 
indicates that this is possible, but I'm having trouble and would be grateful 
for some help.

I'm using QGIS 3.2.0 Bonn.  I'm running Windows 10 Home, 64 bit, on a Dell 
Latitude E6520 with 8 GB of RAM.  Per recommendations I found in the QGIS 
documentation, I'm using GPS 2 IP installed on my phone to enable it to send 
GPS data to my QGIS software.  I'm using the "GPS Information" panel in QGIS as 
directed.

I have successfully established a connection between my phone and QGIS.  Per 
some instructions I found in the QGIS documentation regarding Live GPS 
Tracking, I created a new vector line layer (Shapefile type) and enabled 
editing for that layer and highlighted it in the Layers Panel.  I then traveled 
around the property and, as hoped, a line was created on the map live as I 
moved.  At the completion of the route I attempted to save changes.  However, 
this is where I encountered the problem.  What I noticed first was that the 
line created by the GPS track was not "attached" to any layer.  If I unchecked 
all layers, the line was still there on the white map canvas.  And I could not 
get rid of it unless I closed and re-opened QGIS...at which time it would go 
away.  On the other hand, I cannot save it either.  It does not appear to be 
attached to any layer nor can I save it the layer I created or any other layer. 
 I've tried deleting and creating a new vector layer, but I get the same 
results.  Everything seems to be working to get the track into QGIS, but I just 
can't get it associated with and saved on a layer.

I'm very impressed with QGIS and our property map has already been a valuable 
tool for us.  This GPS tracking ability would be very useful and I would very 
much appreciate any help.  Thank you in advance for you willingness to help a 
beginner.

Sincerely,

Don Parks

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Re: [Qgis-user] Simple methodology for user / data / map interactivity?

[Brent Wood]

Sort of in the area you are asking about:

See the Action tool 
Under Windows this can invoke a batch file to display the result of an sql for 
data about the (Postgis) feature clicked on. Even easier under Linux with a 
bash script. If one of the fields is an image file, you can create an action to 
display the image associates with the feature. A useful bit of functionality...
But to do exactly what you are asking, I think the Attribute table does this, 
so it is a matter of explaining the steps to your users, rather than writing 
code...

If you select a set of features in a Postgis (or most type of layer) layer 
rendered on the map, QGIS highlights the selected ones as defined in the 
project properties. Open the Attribute table for the layer, you will see the 
selected features, not only highlighted on the map, but also in the attribute 
list. Click the "move selected features to top" button, and the 
selected/highlighted features will always be at the top of the list. The 
attribute table has buttons at the top to zoom & pan to selected features...
Cheers,
Brent


  From: SEGGIE Graeme 
 To: "Qgis-user@lists.osgeo.org"  
 Sent: Friday, February 24, 2017 6:48 AM
 Subject: [Qgis-user] Simple methodology for user / data / map interactivity?
   
 I would 
like to use QGIS as a visual / interactive front to somePostGIS data and am not 
sure what the best route to doing so is. Happy to explore further myself, but 
wanted to get some input on what needs to be joined up to get started on 
building a little process.    Basically, if I wanted to present a map of 
features and have a button (like the attribute information one) which a user 
would click then use to select features, I want this to run a SQL query which 
to get related features for example and highlight them on the map view, 
possibly pan to the extent of the newly selected feature set.    Does this 
sound like a plugin – or would that be taking things too far?    Would the best 
way for the dynamic layer to be setup, to be a view – empty except when 
populated by the query and styled to be dominant over the full set of features? 
    As a simple example, say I had a district zone system of polygons and I 
wanted a user to be able to click on any polygon, and have all the neighbouring 
polygons highlighted, centred and fill the map view as fully as possible. What 
would be the best / simplest approach to this?    Graeme    

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Re: [Qgis-user] Tool to copy the content of the map canvas to the clipboard

[Brent Wood]

I just save the project as image, then add the image to a document. While 
perhaps a few more clicks than using the clipboard, it works fine.

Cheers,
Brent 

On Wednesday, December 21, 2016 9:45 PM, Richard Duivenvoorde 
 wrote:
 

 On 12/20/2016 09:43 PM, Larry Shaffer wrote:
>    2016-12-20 18:23 GMT+01:00 Bo Victor Thomsen
>    >:
>
>        Hi List-members -
>
>        Is there in Qgis a function / button / menu-item / short-cut /
>        plugin to make a simple bitmap copy of the current content of
>        the map-canvas and save it to the clipboard ? My users need this
>        to make a copy of the map and paste into MS-Word or other software.
>
>
> While not part of the QGIS app, one could use this PyQGIS snippet to do
> so (tested quickly on macOS 10.11.6 under QGIS 2.14) from the PyQGIS
> console:
>
> from PyQt4.QtGui import *
> QApplication.clipboard().setImage(QImage(QPixmap.grabWidget(iface.mapCanvas(
>
> This avoids having to re-render the QGraphicsView (QgsMapCanvas) to a
> paint device, like an image. Code can be wrapped in a plugin, then have
> some key bindings applied (would need some more PyQt).

Tested here on Linux: working fine too!!

I think this looks like a nice (easy?) feature request to make this core 
functionality?

- right-click menu on mapcanvas with:
  - save Map to Clipboard
  (- set size of MapCanvas to...) I know this is also often needed...

- one or two buttons to do this?

While a plugin works for older versions, I think it should not be needed 
for a teacher/user to hear: install QGIS and add the following 
plugins (while that is actually what I often have to say)

I think I could even try to do this :-)

Regards,

Richard Duivenvoorde

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Re: [Qgis-user] QGIS vs ArcGIS in Education and Practice

[Brent Wood]

Hi,
I agree that most "GIS jobs" are after ESRI expertise. However, I think you 
have answered yourself - many universities offer GIS classes. Based on donated 
ESRI software to create market dominance. 

Many other disciplines, especially in environmental science also run GIS 
classes with a focus on their discipline. These typically use QGIS & open 
source as they are not the beneficiaries of ESRI marketing largesse, and open 
source provides the required functionality within budget :-) 

So - if you want to train GIS professionals, ESRI does make sense, if you want 
to train (say) ecologists in using GIS for ecology, use QGIS.
If you want a more solid grounding is GIS, & spatial data analysis, modeling & 
management, teach a suite comprising QGIS, R & Postgis.

Another aspect to consider, in the third world, especially African & Pacific 
Island nations, QGIS is the preferred platform. Generally only in the first 
world, and often just western nations, is commercial GIS software a popular 
choice.  

Brent Wood 

On Saturday, December 17, 2016 6:08 AM, Innisfree McKinnon 
<innisfree.mckin...@gmail.com> wrote:
 

 Hello again,Many, if not the majority of university students in GIS classes 
are not going to end up with GIS as their main career focus. The vast majority 
of my students are environmental science majors who are going to end up working 
in government positions that require some GIS. So yes, lots of students who are 
in college GIS classes aren't that motivated. In my experience in every class 
there are a few students who take to GIS and could make a career out of it. The 
rest are going to get enough basic skills to use it if their job requires it, 
but it isn't their passion.
I have been arguing the QGIS is more affordable and accessible, but learning 
two or more applications complicates things. Do I have them repeat things they 
already know how to do in one application in the other? Do I teach certain 
skills/techniques in one platform and others in the other platform? Ideally I 
would like to teach them how to evaluate and select the application that they 
like best for a particular project, but how do I do that? 
Most QGIS users seem passionate about open source, and tend to avoid ESRI 
products if at all possible, in my experience. But most gov. jobs in the U.S. 
still say must have experience with ArcGIS. Otherwise I would love to move to 
all open source.Innisfree
On Thu, Dec 15, 2016 at 11:40 PM, Nyall Dawson <nyall.daw...@gmail.com> wrote:

On 16 December 2016 at 08:38, Nicolas Cadieux
<nicolas.cadi...@archeotec.ca> wrote:
> Hi,
>
> This is a good question! My answer would be that students have a better
> chance of having a job if the learn GIS and not a software.

+1 to that. To put it bluntly, I think ANY GIS practitioner who can
only list experience with a single application (or vendor's suite) on
their resume is not at all competitive in today's market. There's
enough free open source or trial software available that it really
shows a lack of motivation for someone not to have skills in more than
one application.

Nyall
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Re: [Qgis-user] Plea for help with monochrome maps for publication

[Brent Wood]

Have a look at cpt city: http://soliton.vm.bytemark.co.uk/pub/cpt-city/
While very much colour based, there is at least one grey scale palette. It does 
not support stipples or hatchings as far as I know. 
It does support downloading palettes in native FOSS GIS formats such as GMT & 
QGIS. 

QGIS also supports the native use of colour gradients from there, 
see:https://teamwork.niwa.co.nz/display/NQUG/Find+additional+colour+ramps

Cheers

Brent Wood
  From: Bernd Vogelgesang <bernd.vogelges...@gmx.de>
 To: qgis-user@lists.osgeo.org 
 Sent: Saturday, November 12, 2016 12:24 PM
 Subject: Re: [Qgis-user] Plea for help with monochrome maps for publication
   
Have a look at http://colorbrewer2.org

There you can check for grey-scale tones that are distinguishable and  
printer friendly, so you can set up a palette with those values.
The downside of grey scales is, that there are not so many different tones  
available as when working with colours.

Cheers



Am 11.11.2016, 18:26 Uhr, schrieb David Addy <david_a...@lineone.net>:

> Most of us prepare our maps using colours for different outlines or  
> different
> colour shades of fill for polygons. However, there are still occasions  
> where
> maps produced for publication in books or magazines will end up as  
> shades of
> grey  to save the cost of colour printing. This is certainly the case for
> most of the local history texts for which I am often asked to make maps.
> This can result in greys which are fairly indistinguishable from each  
> other,
> and traditionally this issue was approached by adding hatchings to the
> ‘colour’. This could end up as looking a mess and/or failing to  
> adequately
> highlight an area of highest activity in distribution maps.
> Has anybody got any experience of, or advice for,  successfully solving  
> the
> problem of making monochrome maps look more attractive and useful?
>
>
>
>
> --
> View this message in context:  
> http://osgeo-org.1560.x6.nabble.com/Plea-for-help-with-monochrome-maps-for-publication-tp5295385.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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-- 
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
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Re: [Qgis-user] Database options

[Brent Wood]

Hi,
You can use Spatialite with both - by accessing the db via odbc in LibreOffice. 
This is describes OS X, but should work elsewhere as well. See:
https://www.andrewheiss.com/blog/2016/02/10/libreoffice-base-sqlite-odbc-osx/
Cheers
Brent Wood


  From: Tyler Veinot <tylerkvei...@gmail.com>
 To: QGIS User List <qgis-user@lists.osgeo.org> 
 Sent: Wednesday, September 28, 2016 4:09 AM
 Subject: [Qgis-user] Database options
   
Hello;I need some database options; I tried PostgreSQL, HSQL, 
SQLite/Spatialitem, Access (mdb/accdb) and what I get is either it works well 
with QGIS and doesn't work well at all with LibreBase or vice versa, with the 
exception of PostgeSQL which works well with both but I don't have a server to 
run it on. Are there any other databases that you can suggest? With no server 
at the moment I would like something that exists in a file in the same way; 
SQLite, Access, or file geodatabases do, but also compatible with QGIS and 
LibreBase.Thanks;Tyler
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Re: [Qgis-user] Trying to establish contact with GIS educators using QGIS

[Brent Wood]

Hi,
Google "+QGIS +University course" throws up a few useful results-
Harvard, Newcastle, Southampton, Maynooth & Bristol Universities.This sort of 
course might also be of interest: 
http://www.tzcrc.org/wp/training/advanced-gis-with-postgis-and-qgis/
and closer to home: 
http://arwh.org/event/2-day-qgis-course-ecologists-conservation-practitioners

There are also QGIS courses associated with universities rather than run by 
universities. A staff member may run classes, for example.
Cheers
Brent Wood

  From: Badri Basnet <basn...@gmail.com>
 To: qgis-user@lists.osgeo.org 
 Sent: Wednesday, July 27, 2016 3:54 PM
 Subject: [Qgis-user] Trying to establish contact with GIS educators using QGIS
   
Hello List Members,   Greetings from Toowoomba, Queensland, Australia.   I 
have recently started using QGIS as a teaching tool for providing hands-on GIS 
skills to my undergraduate students in my introductory GIS courses at the 
University of Southern Queensland (USQ).   I am interested to contact with 
members (possibly academics of other educational institutions) around the world 
who are using QGIS software as a teaching tool in their GIS or GIS related 
course/s.   Would there be a list of members (and their affiliation) currently 
using QGIS software in their teaching?  If there is, please direct me to the 
list. If not, please suggest me on how I could possibly contact other similar 
users.   Thank you.   Regards   --- Badri B. Basnet School of Civil Engineering 
& Surveying Faculty of Health, Engineering & Science, The University of 
Southern Queensland West Street, Toowoomba, QLD 4350 Phone: +61 7 46312537 Fax: 
+61 7 46312526 E-Mail: badri.bas...@usq.edu.au   
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Re: [Qgis-user] QGIS Viewer

[Brent Wood]

And how do you stop a user from turning them on again?
Brent Wood


  From: Heikki Vesanto <heikki.vesa...@gmail.com>
 To: t...@wildintellect.com 
Cc: qgis-user <qgis-user@lists.osgeo.org>
 Sent: Friday, July 1, 2016 6:18 AM
 Subject: Re: [Qgis-user] QGIS Viewer
   
You can hide most of the interface using the settings>customise menu, no plugin 
required.On 30 Jun 2016 18:30, "Alex M" <tech_...@wildintellect.com> wrote:

On 06/30/2016 09:40 AM, James Keener wrote:
> How are users accessing the data?  If they're connecting to a
> database, can you simply not give them update permission?  If it's
> files, can you can keep read-only master copies on a public
> store/shared drive?
>
> Jim
>
> On Thu, Jun 30, 2016 at 12:20 PM, Tyler Veinot <tylerkvei...@gmail.com> wrote:
>> Hi again;
>> Just wondering if there is a QGIS Viewer available, or any suggestions as to
>> what I can use that is open source with some basic spatial search
>> capabilities and can view filegeodatabases?
>>
>> I have been deploying QGIS to our staff to view our GIS Data and I am
>> starting to get a little nervous where someone could easily do some awesome
>> geoprocessing damage to our data if they got to messing about. So does QGIS
>> have something like Esri's Arc Explorer?
>>
>> Thanks
>> Tyler
>>

The other approach I've seen is to use a plugin to disable and hide most
of the interface.

Thanks,
Alex

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Re: [Qgis-user] Fwd: Access ArcGIS Rest Services in QGIS

[Brent Wood]

Hi Rob,
Open the URL in your browser - you'll see a list of folders, click on a folder 
& drill down this "directory" structure until you get a list of "layers", this 
is the URL you paste into the beta QGIS REST tool - eg, for the biota layers, 
enter this URL into the QGIS 
tool:http://gisservices.scc.qld.gov.au/arcgis/rest/services/Biota/Biota_SCRC/MapServer
 
Cheers,
Brent Wood

  From: Rob Stewart <rstew...@hydrologyandwater.com.au>
 To: qgis-user@lists.osgeo.org 
 Sent: Tuesday, June 14, 2016 2:25 PM
 Subject: [Qgis-user] Fwd: Access ArcGIS Rest Services in QGIS
   
Hi,My local council has free online GIS information in the form of an 'ArcGIS 
Rest Service'.  It contains various data types including vectors (contours), 
rasters (aerial imagery) and LiDAR DEMs.  The PDF file here has details on how 
to access from the web or from ArcGIS but I'm hoping it will be possible to 
acces all this data from QGIS (latest desktop version 2.14.3-essen).  I tried 
plugin: 'ArcGIS REST API Connector' but did not have any luck.
Can anyone assist?
Thanks,Rob 

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[Qgis-user] "Open Geospatial Science & Applications" webinar series

[Brent Wood]

The OSGeo Labs, with the University of Colorado in Denver, are producing a 
series of webinars.
They cover a range of topics, including humanitarian, educational & real world 
applications for GIS & mapping software using open source applications. All are 
free, in English & available as recorded videos if you missed the live event 
(probably useful in the NZ time zone)

http://www.geoforall.org/webinars/

Cheers,
  Brent Wood
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Re: [Qgis-user] QGIS releases announced too early IMHO

[Brent Wood]

Despite being a non-Mac user, I respectfully disagree
Mainstream users should not have to wait until packages for ALL systems have 
been built. Some minor ports may take someone a while to complete - & others 
need not be waiting on this.
A QGIS release announcement is NOT a promise that every OS out there will have 
a new package ready to go at the same time... It says only that the developers 
of the Open Source package QGIS have a new set of Open Source for people to 
access & use.
I believe the wider user community are incredibly well served by both the devs 
& the packagers (as a user of Windows, Ubuntu (dev version) & OpenSuse 
packages) and would like express my appreciation here!! 
If a packager has not built you a package when you want, compile it from the 
new source - that is what open source is fundamentally about. Though personally 
I, being lazy & not a dev by any means, just wait for the package except on 
Ubuntu (actually Mint) where my desire to play with the bleeding edge is 
enabled by the the nightly dev build - a wonderful resource!
That said, I see that the response is to try & do better - we cannot ask for 
more :-)

Cheers
Brent Wood

  From: "b.j.kob...@utwente.nl" <b.j.kob...@utwente.nl>
 To: madman...@gmail.com 
Cc: qgis-user@lists.osgeo.org
 Sent: Thursday, March 3, 2016 1:28 AM
 Subject: [Qgis-user] QGIS releases announced too early IMHO
   
Hi Nathan,
You state that "There is no "official" release until the banner is changed on 
qgis.org and announcement is made on the mailing lists/twitter, etc.". Well, 
that has happened now, but the KyngChaos site for Mac OSX still has 2.12. 
That is NOT a negative comment on that site, but it would be much nicer if the 
official release messages did not go out until AFTER all packagers have done 
their (great and much appreciated) work...
Barend
--Barend KöbbenSenior Lecturer – ITC-University of TwentePO Box 217, 7500 AE 
Enschede (Netherlands)@barendkobben

On 29/02/16 12:31, "Nathan Woodrow" <madman...@gmail.com> wrote:
Hi,
Just so people are aware of the process.  The count down on the website doesn't 
always mean the packages will be ready on release date, that is only the 
date/time that the code will be unfroozen and packages will begin being made.  
Some packages can take longer then others before they are up on the website, OS 
X for example.    There is no "official" release until the banner is changed 
onqgis.org and announcement is made on the mailing lists/twitter, etc.
Packages are being made and will be up on the website when ready, best advice 
is to keep an eye there.  You can normally get the builds from OSGeo4W if using 
Windows, however until the packages are out that isn't an official version even 
if on version 2.14, last minute changes might still need to happen.
Regards,
On Mon, Feb 29, 2016 at 9:13 PM, Nikolaus Pruzsinszky <n@reflex.at> wrote:

QGIS 2.14 (the new LTR) should have come out last friday. Is there any 
information when it will be availlable?
Cheers, Niko
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Re: [Qgis-user] Assistance with high-level use case of QGIS for commercial use

[Brent Wood]

Hi Dave,
If you don't require any desktop mapping, just a web accessible spatial overlay 
operation, I'd have thought using Postgis to store your polygon layer(s) & to 
carry out the overlay operation, then return the txt file would be simpler & 
easier, via any sort of scripted web interface.

the sqls for the overlay to return the text file could just about be as simple 
as:
copy feature from txtfile;
select f.id, f.lat, f.lon, p.id 
   from polygon p, feature f 
   where ST_Contains(p.poly, ST_SetSRID(ST_Makepoint(f.lon, f.lat),4326));
drop feature;

The first loads the text file into a database table - at potentially 10,000's 
per second...

The second creates a point geometry from the point coordinates, sets the 
coordinate reference system for this to lat/long, and returns the point values 
as well as those of any polygon on your polygon dataset which the point lies 
within.

The point table is then deleted.

You just need to wrap this up in your preferred scripting language to make it 
web accessible.
HTH,

Brent Wood

  From: Dave Tobias <terra2...@gmail.com>
 To: qgis-user@lists.osgeo.org 
 Sent: Saturday, February 27, 2016 11:26 AM
 Subject: [Qgis-user] Assistance with high-level use case of QGIS for 
commercial use
   
I'm new to QGIS and have been a very long time user of a commercial GIS 
solution.  Their fee to deploy a mapservice has opened my eyes to other 
options.  I use the term mapservice loosely because what I want to deploy won't 
even have a map GUI.  It is quite simple actually:I would like to deploy QGIS 
such that multiple non--GIS users can use their individual secure logins to 
upload a .txt file (in a prescribed format) which will contain a feature ID, 
latitude and longitude coordinate for each row.  Then in batch mode, the 
program would then overlay the points with a polygon layer I maintain on that 
server. The output would be a .txt file containing the input attributes plus 1 
attribute added to each row from the polygon layer. No map display needed, no 
other user interaction.  This is a simple geospatial operation for which they 
will pay a nominal fee.I was able to do this same operation manually with QGIS 
desktop and I see there is an API to perform the operation as a script.  
So...are there any barriers to me doing this with QGIS/QGIS Server? Is there 
support for this use-case already? I searched but didn't come up with any 
concrete examples in the forums already - a few were interactive apps, but I 
need mine to run in batch mode.Thanks in advance - hopefully I'm sending to the 
correct forum!

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[Qgis-user] Relations capabilities

[Brent Wood]

Firstly, thanks to those who already helped me with this.
I have established a relation between non-spatial catch records in a postgis 
table and a table of station information (linked via foreign key).
If I click on a station with the info tool, I can see the various catch records 
from that station - so the relation is working.
But that seems to be it. If I filter on the species in the catch, that only 
applies to the catch data showing up when I select a station - it does NOT hide 
stations where that species was not caught. I cannot change symbology based on 
a relation, I cannot select features based on a relation - all I can do is view 
the records - and with 70 fields in the station layer, the catch records are 
just a small window at the bottom of the form.
It seems that to be useful I need to create the view or table in the database & 
access this with QGIS - whioch has issues for users without create access in 
the database - which is most of them.
Is work on this area (relations) of QGIS actively ongoing, or should I look for 
non-QGIS approaches?
Thanks,
  Brent Wood

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Re: [Qgis-user] information

[Brent Wood]

Hi Gill,
QGIS needs to know exactly what CRS the data is before it can convert them to 
something else. The EPSG code is normally how you do this. If you 
see:http://spatialreference.org/ref/?search=irishthere seem to be 6 
possibilities. I'm not sure what the difference is, but you should identify the 
correct EPSG code for your coordinates.
You can then (in QGIS with the dataset opened as a map - have you got that 
far?) right click on the layer in the layer tab to bring up the layer menu, & 
use the "Set layer CRS" facility to tell QGIS this (if it does not already know 
- in some cases it may have read this from the data automatically).
There are now 3 ways to "translate a long list of Irish grid references to a 
map which has lat and long data" depending on exactly what you mean.

You can then go to Project->Properties to set the QGIS map to EPSG:4326, which 
is basic lat/long coordinates. This will tell QGIS to display your Irish grid 
data as lat/long - ie: reproject on the fly to provide you with a lat/long map.
You can use the layer menu to save your layer, in a different format and/or 
projection as you specify. If you change the output CRS to EPSG:4326 & save it, 
the new dataset will be have lat/long coordinates. This creates a new data file 
(rather than a map), as a lat/long version of your data.  

In the Print composer, for setting up a map layout for printing, you can have a 
map in (say) Irish grid coordinates, but set up labelled ticks on the map frame 
which are in lat/long. You can also choose to use decimal degrees, degrees with 
decimal minutes, optional NSEW suffixes, etc. This gives you a locally 
projected map labelled with degrees.

I hope this helps,
Cheers
Brent Wood


  From: Gill Weyman <gil...@hotmail.com>
 To: "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org> 
 Sent: Friday, February 19, 2016 11:51 PM
 Subject: [Qgis-user] information
   
HelloI am 
new to qgis and wondering how I translate a long list of Irish grid references 
to a map which has lat and long data?
Any pointing in the right direction would be appreciated.Gill

 
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[Qgis-user] Dev nightly upgrade plugin dependency issue

[Brent Wood]

 Hi, running Mint 17 (Ubuntu) using the repo for a nightly build of QGIS 2.13.
Just upgraded fine, but starting QGIS I get error msgs from a couple of plugins 
that yaml is not found. It is installed, but I figure the installed version 
needs updating, but I have the latest in the repo.
Any suggestions?
Thanks...

Brent Wood


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Re: [Qgis-user] adding points within polygons

[Brent Wood]

Hi Robert,
You can create a layer of points for each polygon using:Vector - Geometry Tools 
- Polygon Centroids
if you have a common field in this and the census data, you can then join the 
two:Layer - Properties - Join
But I recommend the use of an underlying database tool to manage your data, 
such as Postgis or Spatiallite, and join the data there to be used in QGIS. A 
collection of files does not provide the power of a database for managing data, 
even when accessed by QGIS. 
 
Well managed data is the foundation your analysis, model or GIS sits on...

Cheers

Brent Wood
  From: rsweeny <rswe...@mun.ca>
 To: qgis-user@lists.osgeo.org 
 Sent: Tuesday, February 9, 2016 2:10 AM
 Subject: [Qgis-user] adding points within polygons
   
Hi
People's answers to Grant's question were so clear I'm hoping that 
something similar might exist to facilitate my task. I have 32k of 
polygons representing every lot in the city of Montreal in 1903. I also 
have the 1901 census returns coded by household (95k of them) to those 
lots. Is there a simple way to have Qgis place points within each lot 
polygon for the corresponding households?
Thanks in advance.
Robert

-- 
Robert C.H. Sweeny
Professor of History
Memorial University of Newfoundland
St John's NL, A1C 5S7
Canada
709-864-8440, 709-864-2164 (fax)

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Re: [Qgis-user] adding points within polygons

[Brent Wood]

Which version of QGIS are you using? This is in the dev version which I'm using 
(on Linux), but not in QGIS 2.8 (just looked at that on another laptop - 
Geometry tools is there - but not the centroid one). I don't know if it is in 
2.12 or not.

You can also install the "realcentroids" plugin. This seems to create a replica 
of the polygon table, but creates a point feature to replace the polygon, which 
should also do what you want.
I just tried it & it worked in a simple test case. Perhaps your easiest option.

There is also a processing -> qgis geoalgorithms -> polygon centroid function, 
but this can return a point which does not lie within the polygon if the 
polygon is concave.
A bit more cumbersome - but you can also:
 edit the polygon layer, 
open the attribute table
start the field calculatorcreate a new (real no with decimals) column as the X 
value ie: X($geometry)
create a new column as the Y value ie: Y($geometry)save as CSV file
open the CSV file & define it as a point layer using the new X & Y columns for 
coords

You now have a point layer of centroids (but note that centroids can lie 
outside a concave polygon):-)

Cheers
Brent
 

  From: rsweeny <rswe...@mun.ca>
 To: Brent Wood <pcr...@yahoo.com>; "qgis-user@lists.osgeo.org" 
<qgis-user@lists.osgeo.org> 
 Sent: Tuesday, February 9, 2016 7:54 AM
 Subject: Re: [Qgis-user] adding points within polygons
   
 Brent
 So kind of you to respond. I am afraid "geometry tools" is not an option on my 
Vector pull down menu or toolbar. Do I need a plug-in?
 I quite agree with you about the centrality of a proper relational database 
underpinning the gis. It is getting from one to the other that is giving me the 
headaches.
 Robert
 
 On 08/02/2016 7:01 PM, Brent Wood wrote:
  
  Hi Robert, 
  You can create a layer of points for each polygon using:Vector - Geometry 
Tools - Polygon Centroids 
  if you have a common field in this and the census data, you can then join the 
two: Layer - Properties - Join 
  But I recommend the use of an underlying database tool to manage your data, 
such as Postgis or Spatiallite, and join the data there to be used in QGIS. A 
collection of files does not provide the power of a database for managing data, 
even when accessed by QGIS. 
   
  Well managed data is the foundation your analysis, model or GIS sits on...
  
  Cheers
  
  Brent Wood
From: rsweeny <rswe...@mun.ca>
 To: qgis-user@lists.osgeo.org 
 Sent: Tuesday, February 9, 2016 2:10 AM
 Subject: [Qgis-user] adding points within polygons
  
 Hi
 People's answers to Grant's question were so clear I'm hoping that 
 something similar might exist to facilitate my task. I have 32k of 
 polygons representing every lot in the city of Montreal in 1903. I also 
 have the 1901 census returns coded by household (95k of them) to those 
 lots. Is there a simple way to have Qgis place points within each lot 
 polygon for the corresponding households?
 Thanks in advance.
 Robert
 
 -- 
 Robert C.H. Sweeny
 Professor of History
 Memorial University of Newfoundland
 St John's NL, A1C 5S7
 Canada
 709-864-8440, 709-864-2164 (fax)
 
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 -- 
Robert C.H. Sweeny
Professor of History
Memorial University of Newfoundland
St John's NL, A1C 5S7
Canada
709-864-8440, 709-864-2164 (fax) 

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Re: [Qgis-user] Adding Points by Coordinates

[Brent Wood]

Hi Grant,
You can add a text file (delimited text layer) of points pretty easily (the 
comma icon or from the layer menu). 

Then just edit the text file with your favourite text editor. I suggest you 
create the file first, then open it in QGIS. Specify the field delimiter, if 
the first line has column names (usually a good idea), the CRS, which columns 
to use for X & Y coords and tick the "watch file" box to refresh when new lines 
are added.
No real need to build such a tool into QGIS when this works so well.

Cheers,
  Brent Wood
  From: Grant Boxer <box...@iinet.net.au>
 To: qgis-user@lists.osgeo.org 
 Sent: Monday, February 8, 2016 2:39 PM
 Subject: [Qgis-user] Adding Points by Coordinates
   
Is there an option in QGIS to add a point by 
entering its co-ordinates.  For example I have a drill hole position in UTM 
coordinates and I want to create a new layer for this drill hole.  Thanks Grant 
 Grant BoxerConsultant Geologist (FAIG R.P. Geo)Perth, Western Australia
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Re: [Qgis-user] postgis/gresql views

[Brent Wood]

Hi Matt,

What is the actual SQL you use to create the view?Something like:create view 
v_geo asselect tab1.location,   tab1.zone,   tab1.date,   
tab1.value,   tab2.geomfrom tab1, tab2where tab1.location=tab2.location;
Then do a 
select * from v_geo order by location, zone, date;
To check the records are as expected, before you try to open in QGIS. Also note 
that ideally you should include a integer primary key to clearly identify each 
record uniquely.
eg: 
alter table tab1 add column id serial primary key;and include this id column in 
the view.
You have not described the relationship between zones & locations. My 
assumption would be that locations are point features & zones represent 
polygons that the locations lie within, but this doesn't make sense with your 
example - "for all zones in location"
It is also unclear whether you want to view categorised data in QGIS, or create 
Postgis views in Postgis from QGIS:"Ideally I'd like to be able to create 
labels and views from within qgis ..."

Unless I understand your problem better, I can't offer useful advice.

Cheers
Brent Wood


  From: Matt Boyd <mattsli...@gmail.com>
 To: qgis-user <qgis-user@lists.osgeo.org> 
 Sent: Wednesday, December 9, 2015 7:08 PM
 Subject: [Qgis-user] postgis/gresql views
   
Hi QGISers.I'm trying to work out how to display some geological data on 
map.Basically Table x; location1 | zone1 | date1 | value1location1 | zone1 | 
date2 | value2continued with variations in location/zone etc..
spatial table geometry Column | location1

I create a view in postgresql using the location as the common column. However, 
when I try to display my data, zone2 is shown with value1 and I can't work out 
how to get 2 values and 2 zones to display at a time.
All the data is there and shown correctly in the combined attributes table, 
however labels don't show correctly.
Ideally I'd like to be able to create labels and views from within qgis using 
functions (eg, for all zones in location1, what is the sum of the values).
I've only been at this a couple of hours this afternoon but thought I'd check 
here in case there's a simpler solution than the one I'm heading towards.
ThanksMatt


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Re: [Qgis-user] QGIS 2.12 packaging for Ubuntu 14.04?

[Brent Wood]

Sweet - 

That makes sense. I was getting confused with which LTS - Ubuntu vs QGIS...

Interestingly, while Synaptic thinks my 2.8.1 is up to date, the update manager 
provides me with 2.12...
Much appreciated...
Brent Wood
  From: G. Allegri <gioha...@gmail.com>
 To: qgis-user <qgis-user@lists.osgeo.org> 
 Sent: Monday, November 2, 2015 10:07 AM
 Subject: Re: [Qgis-user] QGIS 2.12 packaging for Ubuntu 14.04?
   
Brent,
you should use qgi.org/ubuntugis to your apt sources if you want to update to 
2.12.
https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntugiovanni


Il 01/nov/2015 22:01, "Jürgen E." <j...@norbit.de> ha scritto:

Hi Brent,

On Sun, 01. Nov 2015 at 20:50:44 +, Brent Wood wrote:
> I have added the QGIS LTR repository & the ubuntugis unstable one, but still
> only get 2.8.1 listed when I try to update QGIS.

But we were talking about 2.12 not 2.8.  But:

# tail -2 /etc/apt/sources.list
deb http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu trusty main
deb http://qgis.org/ubuntugis-ltr trusty main
# apt-cache policy qgis
qgis:
  Installed: (none)
  Candidate: 1:2.8.3+20trusty-ubuntugis
  Version table:
     1:2.8.3+20trusty-ubuntugis 0
        500 http://qgis.org/ubuntugis-ltr/ trusty/main i386 Packages
     1:2.8.1-0+20trusty6 0
        500 http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu/ 
trusty/main i386 Packages
     2.0.1-2build2 0
        500 http://approx:/ubuntu/ trusty/universe i386 Packages

So that looks fine to me.


Jürgen

--
Jürgen E. Fischer           norBIT GmbH             Tel. +49-4931-918175-31
Dipl.-Inf. (FH)             Rheinstraße 13          Fax. +49-4931-918175-50
Software Engineer           D-26506 Norden             http://www.norbit.de
QGIS release manager (PSC)  Germany                    IRC: jef on FreeNode

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Re: [Qgis-user] QGIS 2.12 packaging for Ubuntu 14.04?

[Brent Wood]

Hmmm...
Running Mint (Ubuntu Trusty):
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=17.1
DISTRIB_CODENAME=rebecca
DISTRIB_DESCRIPTION="Linux Mint 17.1 Rebecca"
NAME="Ubuntu"
VERSION="14.04.1 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.1 LTS"
VERSION_ID="14.04"

I have added the QGIS LTR repository & the ubuntugis unstable one, but still 
only get 2.8.1 listed when I try to update QGIS.
The nightly dev version works though.
Thanks

Brent Wood
  From: G. Allegri <gioha...@gmail.com>
 To: Filipe Silva Dias <filipesd...@gmail.com> 
Cc: qgis-user <qgis-user@lists.osgeo.org> 
 Sent: Monday, November 2, 2015 9:37 AM
 Subject: Re: [Qgis-user] QGIS 2.12 packaging for Ubuntu 14.04?
   
Well done Jurgen! Thx ;)giovanni

Il 01/nov/2015 18:18, "Filipe Dias" <filipesd...@gmail.com> ha scritto:

Hi, it's working on my system (64 bits). Thanks F.
On Sun, Nov 1, 2015 at 4:48 PM, Jürgen E. <j...@norbit.de> wrote:

Hi Giovanni,

On Fri, 30. Oct 2015 at 11:49:34 +0100, G. Allegri wrote:
> AFAICS the ubuntugis dist doesn't contain QGIS 2.12 for Ubuntu Trusty.
> Is the packaging going to be created or will it be available for Precise
> only?

Check again please.


Jürgen

--
Jürgen E. Fischer           norBIT GmbH             Tel. +49-4931-918175-31
Dipl.-Inf. (FH)             Rheinstraße 13          Fax. +49-4931-918175-50
Software Engineer           D-26506 Norden             http://www.norbit.de
QGIS release manager (PSC)  Germany                    IRC: jef on FreeNode

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Re: [Qgis-user] Fwd: QGIS hardware recommendations?

[Brent Wood]

Hi,

The general answer is as much and as fast as you can get - cpu, memory & disk. 
Depends as much on your expectations, patience & workload as anything :-)
If you are working with lots of data, memory & disk, anything analytical, cpu - 
and note that reprojecting on the fly counts as analytical :-)

I'm doing pretty well with ex-lease Dell E6420 laptops. They are now being sold 
cheaply - 3-4 years old but are well built & came with a 3 yr warranty when new 
so are not the cheaper 1 yr warranty home & student systems the big retailers 
sell.

Typically good I5 2.6Ghz cpu, 4gb ram, 500gb WD Black HDD (a faster model than 
most spindles drives - though slower than SSD).

Generally quite adequate for my use of QGIS but can be improved. I can use 
several Gb of data as shapefiles or Postgis tables, processing with R, 
reprojecting on the fly, surface modelling, etc, & I find it satisfactory - not 
blindingly fast, but not really waiting too long for anything.

For a fastish version, I add 4gb memory (8Gb total), get a modular HDD 
enclosure to fit the removable optical drive bay & add an SSD for boot & swap, 
install Linux & run Postgis on the spindle drive. 

Works out at <$300US for a pretty quick system for most things.
Also has pretty good battery life for the performance.

One point to note - be careful on your cpu choice. I7 does not mean faster than 
I5, but does generally mean more cores. Clock speed is also misleading, an I5 
2.67 cpu can be substantially slower than an I5 2.6Ghz (I have one of each in 
front of me right now - with same memory & disk).

eg: from PassMark CPU Benchmarks - High Mid Range CPUs
Intel Core i7-2640M @ 2.80GHz  3,914 
Intel Core i7-4550U @ 1.50GHz       3,893 
Intel Core i3-4110M @ 2.60GHz  3,873 
Intel Core i3-2120 @ 3.30GHz     3,869 
 Intel Core i7-3537U @ 2.00GHz   3,857 
 Intel Core i5-5300U @ 2.30GHz       3,849 
  
While these don't tell the whole story (mix of laptop/desktop versions), it is 
likely that you would often not see much difference between these cpus in terms 
of performance - but simplistically, the more QGIS takes advantages of multiple 
cores, the more a FAST I7 is likely to work better. I would not go below 
I5@2.5Ghz for QGIS. 


Hope this helps... vague as it is, but performance is not a simple question...
Cheers,
  Brent Wood


 From: Nicolas Cadieux <nicolas.cadi...@archeotec.ca>
To: Qgis Users List <qgis-user@lists.osgeo.org> 
Sent: Thursday, October 22, 2015 3:55 AM
Subject: [Qgis-user] Fwd: QGIS hardware recommendations?
 

Hi,
I think this message never made it to the server.  Apologies if it did.

Nicolas Cadieux M.Sc.

-- Forwarded message --
From: Nicolas Cadieux <nicolas.cadi...@archeotec.ca>
Date: Oct 19, 2015 14:57
Subject: QGIS hardware recommendations?
To: Qgis Users List <qgis-user@lists.osgeo.org>
Cc: 

> Hi,
>
> We are building new (Windows 10) computers for QGIS and I was wondering if 
> there is any new hardware consideration to think of? I don't want a gamer 
> style debate on Intel vs AMD or nvidia vs ATI but I am wondering if the QGIS 
> CODE is evolving toward a better support of things like nvidia's Cuda support 
> for calculations or rendering.
>
> First off for CPU we are considering the latest i7 on the z170 or X99 
> chipsets. (We are not looking at zeon's for now. These are desktop and not 
> workstations.) I know the differences between both chipsets so no comments 
> are needed here.
>
> Any reason we should go with AMD (apart from the fact that they have more 
> core (currently slower) which could help in muti-threaded  rendering).  Is 
> there an advantage, code wise, to using amd64 cpu's?
>
> Video cards: any nvidia Cuda support in the planning?  Has anything been 
> optimized for AMD/ATI or NDVIA?  Should I be looking for a particular version 
> of OpenGL or DirectX? (I guess QGIS uses OpenGL???) How about when we use 
> GLobe or Qgis2threejs?  Any future consideration needed? 
>
> Memory wise, we will get as much as the budget allows...
>
> Thanks for any comments.  Again, I am looking for comments more from a QGIS 
> CODE perspective and future orientations, not a gamer hardware perspective.
>
> Cheers!
>
> Nicolas
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc. 
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> www.archeotec.ca
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Re: [Qgis-user] Removing artifacts in a created DEM

[Brent Wood]

Not a QGIS (or GRASS) based solution, but GMT (Generic Mapping Tools) has some 
excellent gridding tools, and for the same price :-)
 xyz2grd http://gmt.soest.hawaii.edu/doc/5.1.0/xyz2grd.htmlsurface (very 
powerful & configureable)    http://gmt.soest.hawaii.edu/doc/5.1.0/surface.html
greenspline    http://gmt.soest.hawaii.edu/doc/5.1.0/greenspline.html
triangulate    
http://gmt.soest.hawaii.edu/doc/5.1.0/triangulate.htmlsphtriangulate    
http://gmt.soest.hawaii.edu/doc/5.1.0/sphtriangulate.htmlnearneighbour    
http://gmt.soest.hawaii.edu/doc/5.1.0/nearneighbor.html

Surface in particular - as you increase the surface tension parameter, you will 
get a model which gets smoother - removing artifacts but also real spikes. 
Triangulation fits a surface touching each datapoint, with no smoothing, so 
tends to create ridges or valleys on the lines between points.
Whatever tool you use, no one algorithm fits all datasets well, which is why 
there are so many of them! You may need to experiment with the algorithm 
(command) and parameters (including grid increment size) which give the "best" 
result - ie: the one you like most :-)
Cheers,
  Brent Wood
  From: Nicolas Cadieux <nicolas.cadi...@archeotec.ca>
 To: qgis-user@lists.osgeo.org 
 Sent: Monday, October 19, 2015 4:19 PM
 Subject: Re: [Qgis-user] Removing artifacts in a created DEM
   
Hi,
I would go with the TIN if your points are far apart. That will not create the 
bumps that you see.  IDW is good but you may have to change the IDW weights 
from 2 (1\2, the typical gravity model) to 3 or 4 to smooth thing out.  Be 
careful and make sure you original values don't shift too much.  NN is very 
good if you have a very high density of sampling points (like LiDAR), at least 
in regards to the way it is implemented by GDAL.Nicolas Cadieux M.Sc.
Les Entreprises Archéotec inc. 
8548, rue Saint-Denis Montréal H2P 2H2
Téléphone: 514.381.5112  Fax: 514.381.4995
www.archeotec.caOn Oct 17, 2015 03:29, "Andreas Neumann [via OSGeo.org] " 
<[hidden email]> wrote:

 Hi Hernan,
 
 I think neither of the methods you used give good results for interpolating 
terrain data (or most other interpolations).
 
 I had good results with v.surf.rst (available in the Processing toolbox in the 
GRASS section). There are tons of options with the v.surf.rst - but the 
defaults probably work for most options. You also don't have to output all the 
raster results - just the interpolated surface.
 
 One of the other options is the "Interpolation plugin" which comes with QGIS 
(but you have to enable it in QGIS). It appears in the raster menu in as 
"Interpolation". It offers a TIN interpolation and IDW. I think the TIN method 
is the more interesting one.
 
 Hope this helps,
 Andreas
 
 On 17.10.2015 00:21, hersala wrote:
  
  Hello,
  
  I'm working with a bundle of N-S and E-W distributed DGPS point transects on 
gentle glacier slope. With these points I created a shp file and then I 
obtained several DEMs (.tif files) using the tool Raster/Analysis/Grid 
(Interpolation). I've used Nearest Neighbor, Runing Means and Inverse Distance 
with several argument values. Inverse Distance produces the best results, but 
there are some artifacts that persists and makes the output unusable. They give 
the impression as if the glacial slope has bumps, but on the contrary, it is 
quite gentle. 
  Can anyone give any advice in how to proceed to reduce such artifacts. 
  I'm using QGIS 2.8.2-Wien in MS-Windows. 
  Thanks in advance. 
  Hernan 
   
  
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Re: [Qgis-user] (no subject)

[Brent Wood]

Hi,
Don't save as a pdf - these do not generally work as georeferenced images & 
QGIS cannot create a geopdf.
The easy way is without using the print composer, just save the project as an 
image (Project menu) - the default is a georeferenced png (png + world file).
Avenza cannot read these, but QGIS can. Open the png image you just saved as a 
new raster layer in QGIS, & then save it as a Gtiff format image. This should 
create a geotiff of the map that you can read with Avenza.
Cheers,
Brent Wood




  From: Pony Express <ponyexpr...@icqmail.com>
 To: qgis-user@lists.osgeo.org 
 Sent: Sunday, October 18, 2015 1:35 PM
 Subject: [Qgis-user] (no subject)
   

I am a new user to QGIS, and interested in making referenced pdf maps for 
Avenza App.  I find this app excellent out in the middle of no where as the GPS 
on my phone places me on the map.  I tend to be rather adventurous, and often 
can find images of maps for places I travel, but not with the geo referencing.  
I have tried to use QGIS and was able to make images with references, but when 
using print composer to save the pdf, Avenza says the map is not referenced.  :(

Obviously I am not doing something correctly, could some one give me a short 
tutorial or point me to a tutorial?

I have attached link of a map of interest.

http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5357542.pdf
-- 
Pony
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Re: [Qgis-user] Where can I get a shapefile made from a table of co-ordinates to map a bird monitoring project ?

[Brent Wood]

Hi Stephen,
What sort of database? 

While QGIS can talk to several popular spatially enabled databases directly 
(MySQL, PostGIS, SQL Server, Oracle, etc - sometimes with a bit of work) and to 
non-spatial databases with virtual data sources, it may be simpler in your case 
to export the data as CSV and open it as delimited text in QGIS.
You will need to specify the field delimiter character,  the columns to use 
for X  Y coordinates,  the CRS (EPSG:4326 if lat/long decimal degrees), then 
QGIS will plot your data fine. If you still want to create a shapefile, use 
QGIS to save the layer as a shapefile.
Brent Wood
  From: Stephen Routledge r...@netc.net.au
 To: qgis-user@lists.osgeo.org 
 Sent: Tuesday, August 11, 2015 7:09 PM
 Subject: [Qgis-user] Where can I get a shapefile made from a table of 
co-ordinates to map a bird monitoring project ?
   
Dear Qgis list,
Where can I get a shapefile made from a table of co-ordinates to map a bird 
monitoring project ?
I have a data base with 11 fields with 52 eastings and northings which I would 
like to map.
Where can I get a shape file made to fit my QGIS 2.8 WIEN software OS X 10.8.5 
operating system. (EPSG :4326, WGS 84)
Can anyone please help? I have been struggling with this for a week and my 
brain has come to a brick wall….
Any easy solution and a nudge in the right direction would be much appreciated.
Yours sincerely 
Stephen RoutledgeProject ManagerSwamps Rivers  
Ranges0467224124http://swampsriversandranges.org/

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Re: [Qgis-user] Organic heatmap outter contour, and making it look better

[Brent Wood]

Generic Mapping Tools (http://gmt.soest.hawaii.edu) can do all you want, fully 
scripted:
surface, triangulate, xyz2grd, greenspline can all generate a grid from 
scattered point data, depending just how you want it done
gridhisteq can normalise it if requiredgrdimage will turn it into a postscript 
imageps2raster will turn it into a georeferenced png
if you want to clip it to a contour, you can use psclip, or you can use a 
colour palette to set cells representing certain values to NA,  render them as 
transparent 

you can then provide it as a WMS layer with mapserver, qgis server or geoserver 
See sections 7.14-7.19 
here:http://gmt.soest.hawaii.edu/gmt4/gmt/html/GMT_Docs.html

GDAL may be adequate, but has a more limited set of gridding  cartographic 
tools, and GRASS can also do what you want.

  From: Marcelo de Moraes Serpa celose...@gmail.com
 To: qgis-user qgis-user@lists.osgeo.org 
 Sent: Saturday, July 25, 2015 3:13 PM
 Subject: Re: [Qgis-user] Organic heatmap outter contour, and making it look 
better
   
Ops, forgot to include the reference heatmaps here. The goal is to get it to 
look +- like the ones below:
* 
http://www.gislounge.com/wp-content/uploads/2014/08/fortune1000-heat-kernel-us.png
and/or* http://i.stack.imgur.com/DvVyU.png
Cheers,
-- Marcleo.


On Fri, Jul 24, 2015 at 9:58 PM, Marcelo de Moraes Serpa celose...@gmail.com 
wrote:

Thanks to @Neumann, @Abdishakur and @Richard from my previous thread, the info 
was valuable! I did reply the post with some additional questions it but for 
some reason the mailing list server bounced my messages. They are not so 
relevant anymore, but if you get them, I'd still want to know your opinions.
Anyway, I played a couple of hours today with the data I have and with the 
interpolation and countours features of QGis (which seems to use Gdal under the 
cover, which was, for me, a quite interesting finding! That means that any 
result I get with QGis could easily be scriptable, which is  a must, since it 
will eventually be used in a web app pipeline) and I got this: 
https://www.dropbox.com/s/9ig76n1kcxoo76w/Screenshot%202015-07-24%2021.39.00.png?dl=0

It still doesn't look quite like I want*[0] but I'm getting there. The 
countours feature seems to be what I want. The numbers, by the way, is revenue 
per day in a certain area. The colors are not quite right (too many of them) so 
I need to tweak the styles, I think, and I don't want the actual countours 
lines to appear. They all seem to be simple problems to solve, but if you know 
how to do them, I'd love to know!
What seems to be more complicated, is how to create an organic feeling to the 
map. I don't want it to be a square, like this, I want the edge to follow the 
outter points. Here's what I mean: 
https://www.dropbox.com/s/k6na766a4ox1ngg/Screenshot-2015-07-15-21.47.55.jpg?dl=0.
 Does anyone have any idea of to do this?
Thanks!
-- Marcelo.




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Re: [Qgis-user] Windows only, QGIS geoprocessing path bug?

[Brent Wood]

That seems to be the path to scripts, not the binary. All was set up OK in 
QGIS, but it uses system, not user path (Windows has 2 PATH environment 
variables)

Adding the R bin folder to the Windows user (not system) PATH variable  QGIS 
works fine.

Thanks
Brent Wood
  From: Bo Victor Thomsen bo.victor.thom...@gmail.com
 To: qgis-user@lists.osgeo.org 
 Sent: Thursday, July 2, 2015 5:54 PM
 Subject: Re: [Qgis-user] Windows only, QGIS geoprocessing path bug?
   
 Is the path to the R binaries defined in menu Processing -- Options, leaf 
Providers -- R scripts -- R scripts folder (using the 8.3 method of 
defining filenames, IIRC) ? And is R activated (Checkbox in the same branch) ?
 
 Regards
 Bo Victor Thomsen
 AestasGIS 
 Denmark 
 
 

On 01-07-2015 23:47, Brent Wood wrote:
  
 
   Hi, 
  I have a problem with in-house IT security  QGIS geoprocessing under 
Windows. 
  I'm trying to use R from within QGIS processing toolkit. The path to the R 
binaries is in the system path, but not my personal path,  I do not have 
permissions to change my path on this laptop. 
  I can run R from a terminal command line, but R is not found in QGIS. I 
believe this is because QGIS is checking in the user path, but ignoring the 
system path environment variables, so fails to find R. 
  I realise this is a problem created by IT security policies, rather than 
strictly a QGIS issue, but still feel QGIS should be checking both paths to 
locate external executable files. 
  Is it reasonable to file a bug for this? 
  Thanks 
  Brent Wood
  
  
   
 
  
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[Qgis-user] Windows only, QGIS geoprocessing path bug?

[Brent Wood]

Hi,
I have a problem with in-house IT security  QGIS geoprocessing under Windows.
I'm trying to use R from within QGIS processing toolkit. The path to the R 
binaries is in the system path, but not my personal path,  I do not have 
permissions to change my path on this laptop.
I can run R from a terminal command line, but R is not found in QGIS. I believe 
this is because QGIS is checking in the user path, but ignoring the system path 
environment variables, so fails to find R.
I realise this is a problem created by IT security policies, rather than 
strictly a QGIS issue, but still feel QGIS should be checking both paths to 
locate external executable files.
Is it reasonable to file a bug for this?
Thanks
Brent Wood


 
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[Qgis-user] Live DVD advice

[Brent Wood]

Hi,
I'm looking to build a LiveDVD/USB key with QGIS, OSM base layer and web 
services for New Zealand.
Our road  topo data is very up to date in OSM, and we have numerous government 
(central, regional  local) agencies and others providing data via OGC 
services, so I'm hoping the system will have embedded OSM, and pre-loaded OGC 
servers to connect to, as well as some QGIS plugins specific to New Zealand.
The disk/key is intended for schools  demonstrations showing FOSS, FOSS GIS, 
Open Data and Open Standards, focused on NZ data.

Some years ago I built a laptop system demo'ed at several local schools which 
worked OK, with mapserver serving OSM via WMS direct from Postgis. NZ is small 
enough that the data could be rendered dynamically from the vector data in a 
reasonably interactive system. 

I can't reasonably use Postgis on a read only filesystem, and all the later 
guides assume that tiles will be used. Does anyone have any advice as to how I 
might best do this?
Thanks,
Brent Wood
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Re: [Qgis-user] Live DVD advice

[Brent Wood]

Thanks James,
I have looked at 
http://docs.qgis.org/2.8/en/docs/user_manual/working_with_ogc/ogc_server_support.html?highlight=server
  
which seems like it would work - but I'd still need to avoid Postgis as the 
data source (read only filesystem) and sort out the rendering styles for use 
with QGIS - it may be possible to export the OSM Postgis tables as shapefiles  
use those as the data source, but I don't know how to go about adapting the 
rendering styles, which is a large part of the value of OSM - data plus style.
Cheers,
  Brent
  From: James Keener j...@jimkeener.com
 To: Brent Wood pcr...@pcreso.com; Qgis-user List 
qgis-user@lists.osgeo.org; Mapserver-users mapserver-us...@lists.osgeo.org; 
OSGeo Discussions disc...@lists.osgeo.org; Nzopengis 
nzopen...@googlegroups.com; Live-demo live-d...@lists.osgeo.org 
 Sent: Sunday, June 28, 2015 11:52 AM
 Subject: Re: [Qgis-user] Live DVD advice
   
Could you use QGIS Server?  It'd take a qgs file and the data it needs
(which can be any input type QGIS uses, including shapefiles and
spatialite dbs along with PostGIS).

Jim



On 06/27/2015 07:46 PM, Brent Wood wrote:
 Hi,
 
 I'm looking to build a LiveDVD/USB key with QGIS, OSM base layer and web
 services for New Zealand.
 
 Our road  topo data is very up to date in OSM, and we have numerous
 government (central, regional  local) agencies and others providing
 data via OGC services, so I'm hoping the system will have embedded OSM,
 and pre-loaded OGC servers to connect to, as well as some QGIS plugins
 specific to New Zealand.
 
 The disk/key is intended for schools  demonstrations showing FOSS, FOSS
 GIS, Open Data and Open Standards, focused on NZ data.
 
 Some years ago I built a laptop system demo'ed at several local schools
 which worked OK, with mapserver serving OSM via WMS direct from Postgis.
 NZ is small enough that the data could be rendered dynamically from the
 vector data in a reasonably interactive system.
 
 I can't reasonably use Postgis on a read only filesystem, and all the
 later guides assume that tiles will be used. Does anyone have any advice
 as to how I might best do this?
 
 Thanks,
 
 Brent Wood
 
 
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Re: [Qgis-user] Local Government for QGIS

[Brent Wood]

See the DMS Intramaps product - Postgis/Mapserver/QGIS stack plus Intramaps web 
viewer,  supports SQL Server instead of Postgis if required,  

Being well received among smaller councils in New Zealand, and even some large 
government agencies. 

http://mapsolutions.com.au/

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Re: [Qgis-user] Local Government for QGIS

[Brent Wood]

While I can't help in the UK, Digital Mapping Solutions in Australia  New 
Zealand sell  support a council GIS system based on QGIS, mapserver  
Postgis/SQL Server. They may be able to provide some comments?
http://www.mapsolutions.co.nz/

(I don't work for them, but do use them for our QGIS training.)

Brent Wood
  From: Chris Buckmaster chris.buckmas...@runnymede.gov.uk
 To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org 
 Sent: Monday, June 15, 2015 9:51 PM
 Subject: Re: [Qgis-user] Local Government for QGIS
   
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{margin:72.0pt 72.0pt 72.0pt 72.0pt;}#yiv6982424574 
div.yiv6982424574WordSection1 {}#yiv6982424574 Hi All    Interesting discussion 
– I am responsible for GIS at a small local authority in the UK; we are an ESRI 
site but I have seen just how far FOSS4G has come in the last couple of years 
and have now had a proposal accepted to look at migrating our ESRI 
infrastructure over to PostGIS / QGIS / OpenLayers over the next year. I’ve 
been impressed at how efficient FOSS is, and particularly for us where we don’t 
deal with advanced analytics etc, for the tools we need FOSS can provide these 
just as well, if not better in some cases than proprietary offerings.    Does 
anyone know of any local gov authorities that have gone completely FOSS? i.e. 
built their own web app(s) and are using open source desktop and database 
software?    Chris    

From: qgis-user-boun...@lists.osgeo.org 
[mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Andreas Neumann
Sent: 15 June 2015 10:39
To: Micha Silver; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Local Government for QGIS    Hi Micha,

Thanks again for your response. I will discuss this with the devs and will 
probably come up with a proposal, asking for some organizations to join the 
funding.

Andreas On 15.06.2015 10:28, Micha Silver wrote: 
Hi Andreas:

Thanks for your response.
I'm quite sure that for most regional councils here, DXF would not be enough. 
The surveyors and planners that we work with all use Autodesk products. All 
their work is delivered in dwg, and some do not even know that there is such a 
thing as DXF.

I have not been following the Open Design Alliance lately, but including that 
library QGIS would certainly be a quantum leap forward. After Radim's success 
in crowd funding the implementation of GRASS 7, your suggestion indeed sounds 
feasible.

Regards,
Micha

On 6/15/2015 10:28 AM, Andreas Neumann wrote: 
Hi Micha,

That is interesting - we invested a lot in the DXF export capabilities of QGIS. 
Once this is finished I am pretty sure we will also look to improve the 
situation regarding the import.

Do you think import of DXF is enough or do we also need DWG support? If so, the 
best bet would probably be the Teigha library from the Open Design Alliance 
(https://www.opendesign.com/the_oda_platform/Teigha), which isn't available for 
free - but it is the library most other GIS (eg. ESRI, Intergraph) and CAD (eg. 
Bentley, Bricscad, etc.) are using. We would have to pay a membership fee, but 
it allows us to redistribute the library with the software. Membership in the 
consortium is affordable in my opinion.

What are your thoughts on this? Would you also be available to help with a 
crowd-funding effort? Do you see options besides Teigha?

Andreas On 15.06.2015 08:57, Micha Silver wrote: 
   On 06/15/2015 09:23 AM, Bernhard Ströbl wrote: 
Hi Joseph, 

could you elaborate why it would be unrealistic to say we 
could ever be a 100% QGIS? I am curious because I lost contact with ESRI 
products a couple years ago. 

From our point of view, we need support for dwg. That side of vendor lock-in 
is, unfortunately, even stronger that the ties to ESRI. So we stay with Arc* 
not because of the GIS capabilites, but more or less only because of the 
ability to read Autocad plans and surveys

[Qgis-user] American Red Cross offers QGIS training

[Brent Wood]

Things are very positive for Open Source (or at least QGIS) when the Red Cross 
joins all the other institutions supporting  training users. 

I think, with good reason!!

http://americanredcross.github.io/QGIS_Training/

Cheers,
  Brent Wood
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Re: [Qgis-user] Help reusing QGIS action

[Brent Wood]

Cheers Bernhard,
Yes, I can do that, but creating the action for each layer is the repetitive 
task I want to simplify. Instead of typing the the command line for the action, 
I could just select  apply. This is less of an issue for me as for the users 
less familiar with QGIS that I'm working with.  

Like I can create a symbology once, then save it  apply it to new layers, I'd 
prefer not to have to create the action for every layer - instead I could 
create it once then save  reuse as appropriate. 
As an institutional resource, I can create a set of QGIS styles (symbologies) 
that users can copy  apply to layers, without having t go through the complex 
operation of creating it themselves. It would be great to be able to do the 
same thing with actions - create a library of actions for institutional WFS 
services that users can re-use - which is where your suggestion of Python is a 
good one - being platform independent.

Thanks,
  Brent

  From: Bernhard Ströbl bernhard.stro...@jena.de
 To: qgis-user@lists.osgeo.org 
 Sent: Tuesday, June 2, 2015 5:36 PM
 Subject: Re: [Qgis-user] Help reusing QGIS action
   
Hi Brent,

I hope I got the intention of what you want to achieve
Talking about layer actions you could define the same action for each of 
your layers calling the batch script and passing the point's id. Or you 
could create a Python action (functionality provided by a plugin) that 
lists all species for each point. This would be platform independent, too.

Bernhard

Am 02.06.2015 um 01:06 schrieb Brent Wood:
 Hi,
 I can create an action on a biodatabase: the site data is shown on the map, 
 and an action created that will retrieve and dispaly a sorted list of the 
 species identified at that site. This works well, as a bash script for Linux 
 or a batch file for Windows.
 What I'd like to be able to do is save an action, much like a style, to be 
 applied to multiple layers.
 The use case is: open a layer filtered to show species a, then other layers 
 for species b  c. I then want to see the full list of species caught from 
 individual stations, by clicking on the map. Currently I need to create the 
 action separately for each species - when I have hundreds of species, this 
 gets very cumbersome - so storing  re-using the action would be useful, just 
 as I can reuse a style for each species layer with catch size based symbology.
 Is there a way to do this now that I don't know? Do I need to file a ticket 
 for this?
 Any suggestions appreciated!
 Thanks
 Brent Wood



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 database 11719 (20150601) __

 The message was checked by ESET Mail Security.
 http://www.eset.com



 Hi,

 I can create an action on a biodatabase: the site data is shown on the
 map, and an action created that will retrieve and dispaly a sorted list
 of the species identified at that site. This works well, as a bash
 script for Linux or a batch file for Windows.

 What I'd like to be able to do is save an action, much like a style, to
 be applied to multiple layers.

 The use case is: open a layer filtered to show species a, then other
 layers for species b  c. I then want to see the full list of species
 caught from individual stations, by clicking on the map. Currently I
 need to create the action separately for each species - when I have
 hundreds of species, this gets very cumbersome - so storing  re-using
 the action would be useful, just as I can reuse a style for each species
 layer with catch size based symbology.

 Is there a way to do this now that I don't know? Do I need to file a
 ticket for this?

 Any suggestions appreciated!

 Thanks

 Brent Wood


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 signature database 11719 (20150601) __

 The message was checked by ESET Mail Security.
 http://www.eset.com


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 The message was checked by ESET Mail Security.
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[Qgis-user] Help reusing QGIS action

[Brent Wood]

Hi,
I can create an action on a biodatabase: the site data is shown on the map, and 
an action created that will retrieve and dispaly a sorted list of the species 
identified at that site. This works well, as a bash script for Linux or a batch 
file for Windows.
What I'd like to be able to do is save an action, much like a style, to be 
applied to multiple layers.
The use case is: open a layer filtered to show species a, then other layers for 
species b  c. I then want to see the full list of species caught from 
individual stations, by clicking on the map. Currently I need to create the 
action separately for each species - when I have hundreds of species, this gets 
very cumbersome - so storing  re-using the action would be useful, just as I 
can reuse a style for each species layer with catch size based symbology.
Is there a way to do this now that I don't know? Do I need to file a ticket for 
this?
Any suggestions appreciated!
Thanks
Brent Wood
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Re: [Qgis-user] live tracking problem

[Brent Wood]

Hmmm... Using a cheap generic USB GPS with QGIS 2.8.1 on Mint 64 bit (Ubuntu 
LTS) Dell laptop, it all works perfectly - gpsd is installed, running as a 
daemon  I can use gpsmon to view the NMEA strings, and data,  QGIS picks it 
up immediately with autodetect on  clicking Connect.
Open a new shapefile, make it editable and you can save the cached GPS track to 
the shapefile. Edit teh linestrings in teh shapefile and you can create the 
enclosed polygons...

dmesg shows the GPS being connected  eveything works just as it should??
Which may not help you, but suggests the combination of QGIS/GPS/Mint is a 
viable one.
Brent Wood



  From: Ramon Andiñach cust...@westnet.com.au
 To: qgis-user List qgis-user@lists.osgeo.org 
 Sent: Wednesday, March 18, 2015 2:50 AM
 Subject: Re: [Qgis-user] live tracking problem
   
Just in case I have not been clear.

1. My problem is with live tracking, not loading gpx files.

2. These gps were working in 2.6 (and earlier) for this task on these computers.

-ramon.

On 17/03/2015, at 21:06 , Ramon Andiñach wrote:

 I have the same symptom set for builds of both 2.8 ltr and master,
 
 so if anyone has suggestions, I'd be appreciative!
 
 (the windows box is too big to carry around, in case that gets suggested...)
 
 -ramon.
 On 17/03/2015, at 18:42 , Ramon Andiñach wrote:
 
 Hi,
 
 I wondered if anyone had seen something like this?
 
 I have 2 mint17 (ubuntu14.04) installs that both are failing to connect to 
 either of my gps.
 
 The gps are connecting and are being assigned a port.
 I can observe communications.
 I can use gpsbabel to access data on them.
 (So I think the operating system is communicating with them fine)
 
 If I try to connect them inside QGIS, after a 2 second wait (which is 
 really, really short) QGIS tells me that it failed to connect to the gps.
 I can not see any further information in the log or on the terminal.
 There is no sign in the terminal that QGIS actually looked (in previous 
 versions I can see which ports QGIS is trying in the terminal).
 
 To complicate things, the same gps work perfectly on a win7 install 
 (standalone or osgeo4w).
 
 Has anyone else seen this?
 Are there any pointers?
 
 At this point I've.
 Updated everything in sight.
 Uninstalled/reinstalled
 Uninstalled/removed .qgis2/reinstalled
 uninstalled/swapped repositaries/reinstalled
 and am currently compiling master to see if that helps.
 
 -ramon.
 
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Re: [Qgis-user] SQL to update table

[Brent Wood]

NULL means unknown, so you can't say if another value = NULL, it may or may 
not - the db can't tell.

Instead of = there is usually an isnull or is null operator in your 
database to test for null, 
in your case, try:update mc-roadsegs Set RFROMHN =  Where RFROMHN is 
null;
(I use Postgis rather than Spatialite, which would use ' instead of  to define 
strings, so:update mc-roadsegs Set RFROMHN = '' Where RFROMHN is null;)
HTH,
  Brent Wood

  From: Chuck Young wylie1...@gmail.com
 To: Qgis-user@lists.osgeo.org 
 Sent: Sunday, March 15, 2015 10:57 AM
 Subject: [Qgis-user] SQL to update table
   
I am trying to eliminate the text NULL from a table.  I have imported a set 
of Tiger road data and in some of the columns that I need to display the data 
itr has NULL in the field.  If it is Null I would really like that NOT to 
show up in the labeling on the map.

I have tried some standard SQL update queries but they didn't work.  

I tried the following from the QSpatialite form that appears from within QGIS. 
Example:
update mc-roadsegs Set RFROMHN =  Where RFROMHN = NULL;

I also tried to construct a query from within the query builf=der at the top of 
the Attribute table in Edit mode.

I really need to remove these unwanted valued.  It has been a while since I 
used SQL on a routine basis so I am a bit rusty.  

Any help will be much appreciated!

Thanks

Chuck

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[Qgis-user] Free online QGIS training

[Brent Wood]

For those wanting to make effective use of the free environmental and spatial 
data being made available by institutions such as LINZ, DOC, Landcare Research, 
NIWA, Statistics NZ, etc, (not to mention international resources such as OSM, 
NASA, WMO, ...) without buying into expensive commercial GIS software, there 
are several options, including the use of the world's most popular Open Source 
GIS application, QGIS. 

QGIS ibecame a core part of NIWA's Open Data policy, after it became obvious 
that providing open data, without tools tools enabling effective data reuse was 
a somewhat shortsighted approach. Which in turn led to the realisation that 
providing some help in using this software is also important.

NIWA  DMS have recently offered low cost QGIS workshops for anyone interested, 
and there are many online tutorials and other resources. NIWA is also hosting a 
local QGIS User Group, which helps NZ'rs getting started with QGIS,  now has 
more non-NIWA users than 
staff.https://teamwork.niwa.co.nz/display/NQUG/NIWA+QGIS+Users+Group

A new resource is the self paced, free, online QGIS training offered through 
the Canvas Network, starting 
Monday:https://www.canvas.net/browse/delmarcollege/courses/introduction-to-geospatial-technology-1


Cheers,
  Brent Wood ( yes, I do work at NIWA :-)
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[Qgis-user] Help: Installed plugins not visible?

[Brent Wood]

Hi,
I'm running a fresh install of 2.6.1 on Ubuntu Linux. I've added the python 
tools so plugins should work.

I have several plugins supposedly installed OK, and toggled active, but cannot 
see how to invoke them - no icons shown, nothing listed in the plugins menu...
Does anyone know how I can get these working?
Thanks,
  Brent Wood
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Re: [Qgis-user] lat/log grid

[Brent Wood]

 Hi,
This symbol library seems something that I,  perhaps others, would find useful 
in QGIS.
Does anyone have any idea how this could be imported into QGIS?

http://blog.gvsig.org/2015/02/02/gvsig-2-1-symbol-libray-for-climatology/  
Thanks,
   Brent Wood

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Re: [Qgis-user] lat/log grid

[Brent Wood]

Hi Kathleen,
NIWA in New Zealand also needed this sort of capability,  paid Nyall Dawson 
(downunder QGIS developer) to implement improved lat/long grids  annotations 
to the QGIS map/print composer (he did a great job!) - but if you want the grid 
as a map layer, then you'll need to follow some of the links Anita suggested to 
create a set of lines forming the grid. 
You could also use use CAD tools plugin to edit parallel  orthogonal lines in 
a new layer, but beware that displaying lat/long lines in a projected map can 
be problematic - the straight line vs great circle issue.

To create an image with a lat/long grid using the map composer (requires at 
least v2.6 of QGIS):
create your map as usual  start a new print composer (file menu).1. add your 
map to the page (using tool on left side)
2. add a grid, choosing your spacing  labelling preferences - to create 
something like the attached image 
(using menu on right side) 3. Save as image (menu along top)
   
Note that you can create multiple grids, which lets you have one grid with 
(say) 5 degree ticks/lines, then another with no ticks/lines but with labels at 
a 10 degree interval - so your map has every second line labelled.
Hope this helps, if you need more detailed instructions, ask me off list...

Brent


 

 From: Kathleen Cole wxl...@gci.net
 To: qgis-user@lists.osgeo.org 
 Sent: Monday, February 2, 2015 8:22 AM
 Subject: [Qgis-user] lat/log grid
   
Hi,  I'm new to qgis.  How do I add a lat/lon grid (gradicule) to an image?
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Re: [Qgis-user] Unable to add values to text string attributes

[Brent Wood]

 Hi Michael,
I'm (definately!) not a dev, but maybe can help
I think the update all  update selected buttons pertain to the field 
calculator just to the left of the buttons, otherwise the editor is one row at 
a time.
If you enter a string value in the column, then press enter, it will be saved.
To use the field calculator, select the field you want to update (left hand 
pick list), then enter the formula defining the value...eg:  for a simple 
string, for a 64 char text field called test, you finish up with the formula: 

test='HYT'
(note that strings need to be quoted, numerics don't)

then apply this to all or selected columns via the two buttons...
HTH,
   Brent Wood



 From: Michael Grosberg grosberg.mich...@gmail.com
 To: qgis-user@lists.osgeo.org 
 Sent: Saturday, January 31, 2015 3:52 AM
 Subject: [Qgis-user] Unable to add values to text string attributes
   
so, umm, hello, first time here.
First of all, if any of the developers sees this - it's a wonderfull tool
and a joy to use. Now, my question: I have a vector layer (ESRI shapefile) 
and I'm trying to fill some values. numerical values - no problem. I select
some points (this is a point file), type the value I want, press update all
and the column is filled with the value. But I tried the same with a text
string (I created a new column and set it to type string, made it
64 characters long to be safe), and it doesn't seem to work. after creation,
the entire column has the value null, but try as I might to enter a value
and press update all, this does nothing. If I do the same using a digit
(and remember, this is a string attribute!), that DOES work for some reason.

Any ideas what's going on? I've just tested it at home and the same problem 
exists, so it's not just my work PC.

Oh, and another question, although I'm pretty sure the answer is no:
I need to outline building outlines, which I currently do using other apps.
But I'd love to switch to working with Qgis fulltime.
Does QGIS have tools / plugins to help with drawing orthogonal shapes?
I'm thinking about something that would let me draw one line freehand and
then the rest of the lines would be constrained to be parallel or orthogonal
to the first line. Alternatively something that would take a freehand-drawn
polygon and straighten it.

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Re: [Qgis-user] Creating oblique views of QGIS layers

[Brent Wood]

Hi,

I have not done this in QGIS, but have done it often with GMT. I've also used 
it to generate a page of maps showing a time series of survey results, each as 
a 3D perspective plot.

A script draws a layer, then the next, applying a Z offset to each layer as it 
renders them, building the stack. You can use pstext to add text for each layer 
(which can be on the page - does not have to be in the map extent. At the end 
ps2raster can convert the postscript to bitmap which you cam add to your layout 
in the QGIS composer.
Depending on how complex your layers are, the script can get a bit 
complicated... the nature of the beast. QGIS 
(or GDAL) can save your QGIS vector layers in GMT format, rasters can also be 
converted to a format GMT can render.
Brent Wood

  From: Zoltan Szecsei zolt...@geograph.co.za
 To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org 
 Sent: Monday, January 19, 2015 2:47 AM
 Subject: [Qgis-user] Creating oblique views of QGIS layers
   
Hi,
I need to create a layer stack view of some QGIS vector data.
Is there a way to do this in QGIS?

(Rather like what you get when you Google Images of GIS layer)


I want it for a printed map view, and be in place of a traditional 'Key' 
in the one corner of the map plot.

Regards  TIA,
Zoltan

-- 

===
Zoltan Szecsei PrGISc [PGP0031]
Geograph (Pty) Ltd.
GIS and Photogrammetric Services

P.O. Box 7, Muizenberg 7950, South Africa.

Mobile: +27-83-6004028
Fax:    +27-86-6115323    www.geograph.co.za
===

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Re: [Qgis-user] Storing data to postgis from Qgis

[Brent Wood]

Hi David,
I'm not sure why you are trying to do that from QGIS, given you can do it all 
from Postgis directly, especially given your data is already in a database, 
without the mapping/GUI overhead... nothing you have suggested as a means of 
selecting data subsets requires QGIS. 

However, as I read it, at least some of what you are trying to do could also be 
done via a QGIS action, as a system call with SQL statements  data parameters, 
especially with known table names, etc.
Brent Wood

 From: David Kramer dav...@gmail.com
 To: Leknín Řepánek godzilalal...@gmail.com 
Cc: qgis-user qgis-user@lists.osgeo.org 
 Sent: Tuesday, December 30, 2014 6:10 PM
 Subject: Re: [Qgis-user] Storing data to postgis from Qgis
   
Leknin, 
Thanks for the reply. I've followed your recipe and indeed I can paste my 
selected features as a new memory layer (thanks Jan) and then import the layer 
via db manager into postgis. This is tremendously useful, but is not quite what 
I'm looking for.
I don't really want to create a new table, I really want to just select a few 
fields out of my newly selected layer and save those as a row in an already 
created table. For example, let's assume I have a table that lists franchises 
the states that they do business in and the columns:
'Franchise Name'    |  'States'             | 
'geom'===Alice's Restaurant   | NY, NJ, PA    
|   ...
Joe's Burgers          |  CA, NV, OR  |   ...
To add a new row to the table I'd like to go into qgis, select the states for a 
franchise (from a layer of states), save that as a memory layer. Then I'd like 
to have a save function which allows me to enter the franchise name. It would 
save only the name, the states and the geometry as a row in the table. 
Make sense? Is this possible from the GUI or do I need to write a plugin in 
pyQGIS?
Thx

David
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Re: [Qgis-user] QGIS 2.6 installation

[Brent Wood]

See: [Qgis-user] Why can I not find system requirements of QGIS
|   |
|   |   |   |   |   |
| [Qgis-user] Why can I not find system requirements of QGIS[Qgis-user] Why can 
I not find system requirements of QGIS Jonathan Moules jonathanmoules at 
warwickshire.gov.uk Fri Sep 7 04:11:36 PDT 2012  |
|  |
| View on lists.osgeo.org | Preview by Yahoo |
|  |
|   |

  so if you download the 32bit installer you should be fine with 4Gb.
I have run QGIS 2.6 on Linux on laptops with 2Gb memory quite easily. One test 
I tried was memory efficiency - a 200Mb shapefile loaded into QGIS raised QGIS 
memory use by 100Mb, about 1/2 the on disk data size. Another Open Source 
application I was trialling used 400Mb to do the same thing. 

Brent Wood
  From: padmadevi.subraman...@cognizant.com 
padmadevi.subraman...@cognizant.com
 To: qgis-user@lists.osgeo.org 
 Sent: Thursday, November 20, 2014 8:08 PM
 Subject: [Qgis-user] QGIS 2.6 installation
   
 !--#yiv2469498188 _filtered #yiv2469498188 {font-family:Calibri;panose-1:2 15 
5 2 2 2 4 3 2 4;}#yiv2469498188 #yiv2469498188 p.yiv2469498188MsoNormal, 
#yiv2469498188 li.yiv2469498188MsoNormal, #yiv2469498188 
div.yiv2469498188MsoNormal 
{margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:Calibri, 
sans-serif;}#yiv2469498188 a:link, #yiv2469498188 
span.yiv2469498188MsoHyperlink 
{color:blue;text-decoration:underline;}#yiv2469498188 a:visited, #yiv2469498188 
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{color:purple;text-decoration:underline;}#yiv2469498188 
span.yiv2469498188EmailStyle17 {font-family:Calibri, 
sans-serif;color:windowtext;}#yiv2469498188 span.yiv2469498188EmailStyle18 
{font-family:Calibri, sans-serif;color:#1F497D;}#yiv2469498188 
.yiv2469498188MsoChpDefault {font-size:10.0pt;} _filtered #yiv2469498188 
{margin:1.0in 1.0in 1.0in 1.0in;}#yiv2469498188 div.yiv2469498188WordSection1 
{}--Hi Users,    Can you please confirm whether QGIS 2.6 can be installed in 
windows 32 bit OS with 4 GB RAM?    Regards, Padma Devi This e-mail and any 
files transmitted with it are for the sole use of the intended recipient(s) and 
may contain confidential and privileged information. If you are not the 
intended recipient(s), please reply to the sender and destroy all copies of the 
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Re: [Qgis-user] QGIS 2.6 installation

[Brent Wood]

Something looks confused here. The first error is from trying to execute a SAGA 
gis command, not GRASS gis. Looks like GRASS may then be failing to load the 
file which should have been generated by SAGA. If you can resolve this error, 
the GRASS one may go away too.
|Could not load model watersheds.model|Error in algorithm name: 
saga:catchmentareaparallel ALGORITHM
If you are not, you might try running it with the Python console open?

Brent Wood
  From: padmadevi.subraman...@cognizant.com 
padmadevi.subraman...@cognizant.com
 To: pcr...@pcreso.com 
Cc: qgis-user@lists.osgeo.org 
 Sent: Thursday, November 20, 2014 8:26 PM
 Subject: RE: [Qgis-user] QGIS 2.6 installation
   
#yiv1466261196 #yiv1466261196 -- _filtered #yiv1466261196 
{font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #yiv1466261196 
{font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;} _filtered #yiv1466261196 
{font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;} _filtered #yiv1466261196 
{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv1466261196 
{font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;} _filtered #yiv1466261196 
{font-family:Georgia;panose-1:2 4 5 2 5 4 5 2 3 3;}#yiv1466261196 
#yiv1466261196 p.yiv1466261196MsoNormal, #yiv1466261196 
li.yiv1466261196MsoNormal, #yiv1466261196 div.yiv1466261196MsoNormal 
{margin:0in;margin-bottom:.0001pt;font-size:12.0pt;}#yiv1466261196 a:link, 
#yiv1466261196 span.yiv1466261196MsoHyperlink 
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span.yiv1466261196MsoHyperlinkFollowed 
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#yiv1466261196 div.yiv1466261196MsoAcetate 
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span.yiv1466261196link-enhancr-view-on-domain {}#yiv1466261196 
p.yiv1466261196msonormal, #yiv1466261196 li.yiv1466261196msonormal, 
#yiv1466261196 div.yiv1466261196msonormal 
{margin-right:0in;margin-left:0in;font-size:12.0pt;}#yiv1466261196 
p.yiv1466261196msochpdefault, #yiv1466261196 li.yiv1466261196msochpdefault, 
#yiv1466261196 div.yiv1466261196msochpdefault 
{margin-right:0in;margin-left:0in;font-size:12.0pt;}#yiv1466261196 
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span.yiv1466261196emailstyle17 {}#yiv1466261196 span.yiv1466261196emailstyle18 
{}#yiv1466261196 p.yiv1466261196msonormal1, #yiv1466261196 
li.yiv1466261196msonormal1, #yiv1466261196 div.yiv1466261196msonormal1 
{margin:0in;margin-bottom:.0001pt;font-size:11.0pt;}#yiv1466261196 
span.yiv1466261196msohyperlink1 
{color:blue;text-decoration:underline;}#yiv1466261196 
span.yiv1466261196msohyperlinkfollowed1 
{color:purple;text-decoration:underline;}#yiv1466261196 
span.yiv1466261196emailstyle171 {color:windowtext;}#yiv1466261196 
span.yiv1466261196emailstyle181 {color:#1F497D;}#yiv1466261196 
p.yiv1466261196msochpdefault1, #yiv1466261196 li.yiv1466261196msochpdefault1, 
#yiv1466261196 div.yiv1466261196msochpdefault1 
{margin-right:0in;margin-left:0in;font-size:10.0pt;}#yiv1466261196 
span.yiv1466261196BalloonTextChar {}#yiv1466261196 
span.yiv1466261196EmailStyle33 {color:#1F497D;}#yiv1466261196 
.yiv1466261196MsoChpDefault {font-size:10.0pt;} _filtered #yiv1466261196 
{margin:1.0in 1.0in 1.0in 1.0in;}#yiv1466261196 div.yiv1466261196WordSection1 
{}#yiv1466261196 _filtered #yiv1466261196 {} _filtered #yiv1466261196 
{font-family:Symbol;} _filtered #yiv1466261196 {} _filtered #yiv1466261196 
{font-family:Wingdings;} _filtered #yiv1466261196 {font-family:Wingdings;} 
_filtered #yiv1466261196 {font-family:Wingdings;} _filtered #yiv1466261196 
{font-family:Wingdings;} _filtered #yiv1466261196 {font-family:Wingdings;} 
_filtered #yiv1466261196 {font-family:Wingdings;} _filtered #yiv1466261196 
{font-family:Wingdings;}#yiv1466261196 ol {margin-bottom:0in;}#yiv1466261196 ul 
{margin-bottom:0in;}#yiv1466261196 Thanks Brent.    We installed QGIS 2.6 using 
standalone installer in windows OS, 32 bit with 4GB RAM. We are facing the 
below issue when Dissolving Vector layers using Grass commands. The processing 
log shows the below error,    |Could not load model watersheds.model|Error in 
algorithm name: saga:catchmentareaparallel ALGORITHM    The below error occurs 
while using Grass commands to dissolve vector layers, Oooops! The following 
output layers could not be open ·Dissolved layer: 
C:\Users\169099\AppData\Local\Temp\processing\5b5419e238924b5d87fc1e74254dec5b\output.shp
 The above files could not be opened, which probably indicates that they were 
not correctly produced by the executed algorithm Checking the log information 
might help you see why those layers were not created as expected This algorithm 
requires GRASS to be run. A test to check if GRASS is correctly installed and 
configured in your system has

Re: [Qgis-user] Printing with OSM Tiles

[Brent Wood]

Using the virtual GDAL layer to access OSM layers, as below, I don't think QGIS 
is applying it's proxy server settings,  GDAL doesn't have any. Can anyone 
explain how I can set this up to use a proxy server as a QGIS map layer?
GDAL_WMS
    Service name=TMS
    ServerUrlhttp://tile.openstreetmap.org/${z}/${x}/${y}.png/ServerUrl
    /Service
    DataWindow
    UpperLeftX-20037508.34/UpperLeftX
    UpperLeftY20037508.34/UpperLeftY
    LowerRightX20037508.34/LowerRightX
    LowerRightY-20037508.34/LowerRightY
    TileLevel18/TileLevel
    TileCountX1/TileCountX
    TileCountY1/TileCountY
    YOrigintop/YOrigin
    /DataWindow
    ProjectionEPSG:3857/Projection
    BlockSizeX256/BlockSizeX
    BlockSizeY256/BlockSizeY
    BandsCount3/BandsCount
    Cache /


/GDAL_WMS
    

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Re: [Qgis-user] Printing with OSM Tiles

[Brent Wood]

Hmmm...
Just tried opening the XML file in QGIS as described but get the error msg: p, 
li { white-space: pre-wrap; }/home/baw/qgis/qgis_osm.xml is not a supported 
raster data sourceGDALWMS: Bad projection specified.

If you try this you might use EPSG:3857 instead.

Brent Wood


From: Andreas Neumann a.neum...@carto.net
 To: qgis-user@lists.osgeo.org 
 Sent: Monday, November 3, 2014 8:13 PM
 Subject: Re: [Qgis-user] Printing with OSM Tiles
   
Hi Phil,

The OpenLayers plugin is a hack and not an officially supported way by 
QGIS for the loading of OSM data.

I can recommend a different way to load OpenStreetMap tiles - see this 
blog post by René-Luc D'Hont: 
http://www.3liz.com/blog/rldhont/index.php?post/2012/07/17/OpenStreetMap-Tiles-in-QGIS

That way the data is treated a regular image source and you can print 
it. It is not fast and I don't know if QGIS cashes anything, but it 
works. Once you added the layer, please do not forget to set the 
Resampling to Bilinear for Zoomed in and Average for Zoomed out 
(see Style tab in the raster layer properties).

Hope this helps,
Andreas


On 02.11.2014 05:21, Phil (The Geek) Wyatt wrote:
 Hi Folks,

 I am on a WIN64 (Home Premium) machine trying to get OSM layers to print via
 composer but nothing I do seems to give a result. The maps are always minus
 the OSM layers. (or Google or anything from the Open Layers plugin)

 Am I missing something? Should they print? I am on a very slow internet
 connection which doesn't help with rendering these tiles.

 I have tried with both QGIS 2.2 and 2.6

 Any assistance appreciated


 Cheers - Phil

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Re: [Qgis-user] How to store spatial information of various geometry types (point, line, polygon) in one place?

[Brent Wood]

I agree - that approach to managing spatial data was last century's one.


I recommend you use a spatially enabled database to manage spatial data . as 
many geometries/geographies as you want per feature.

We have polygons with a point label location, linestrings with start finish 
timestamps as well as start, finish and mid points.

From a traditional GIS centric perspective the coords defining the spatial 
representation of an entity has a special place - they are the entity,  the 
other attributes just hang of it. A fundamentally flawed model according to 
good data management practices.

A good RDBMS stores a spatial representation value as just another attribute, 
you can have as many geometry, date/time, numeric or text fields describing 
your real world entity as you like... enablind spatial data to be corecvctly 
modelled  managed. Pretty much all GIS tools these days support connecting to 
an external spatial database as an alternative to an internal database or file 
based system. 


I prefer Postgis, but MySQL/MariaDB, or even the free versions of SQL Server  
Oracle support the OGC SFS standard, which, amongst other things, defines an 
approach for storing simple spatial features in a RDBMS.

If you want a cloud based approach - Amazon cloud supports Postgres, you can 
establish a database, install Postgis  insert your data, configuring the 
Postgres server to allow access from your systems as you require via IP 
afddress  user name.  


Cheers,

  Brent




 From: kilolima kilol...@imap.cc
To: qgis-user@lists.osgeo.org 
Sent: Saturday, August 30, 2014 8:39 AM
Subject: [Qgis-user] How to store spatial information of various geometry types 
(point, line, polygon) in one place?
 

Hi All,

For work, we use a Google Sheets spreadsheet that is accessible to various
people. The spreadsheet is mostly text attribute data with spatial
information stored in WKT fields (points and polylines). When it comes time
to make a map, I download a csv and import into QGIS. I realized that the
csv import process will only allow one geometry type during the import and
discard the others. This results in having to repeat the import process for
each geometry type in the csv.

Is there some better way to do this, ideally that would allow text and
spatial data of various geometry types to be stored and read all at once? Is
there a way to get around the seemingly archaic separation of vector layers
based on geometry types? Is there a native QGIS format that can handle this
and import from a spreadsheet?

Or, ideally, is there some sort of magical connector between Google Sheets
and QGIS, so a change online in Sheets would update the map in QGIS?

cheers,

kilolima



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[Qgis-user] QGIS WMS/T problem

[Brent Wood]

I have a colleage using QGIS with a problem accessing some local ESRI WMS/T 
services:
* Dunedin City Council: 
http://apps.dunedin.govt.nz/arcgis/rest/services/Public/PhotoCache2013/MapServer/WMTS
* Otago Regional Council: 
http://gisdata.orc.govt.nz/arcgis/rest/services/Imagery/OtagoRegionalAerials/MapServer/WMTS
The Metadata tab on layer properties shows errors for right bounds (at all 
scales). 

And I've had no luck accessing ArcGIS rest services directly using 
qgis.utils.iface.addRasterLayer in the Python console.
The layers work without problem in a web client using Openlayers.

Can anyone shed any light on the problem? Other ESRI WMS/T services are working 
OK.


Thanks,

  Brent Wood___
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Re: [Qgis-user] print composer

[Brent Wood]

If you can get by by saving the map canvas rather than exporting via the print 
composer - under project, choose save as image.

Brent Wood




 From: daniel pinto daniel.ar.pi...@gmail.com
To: qgis-user@lists.osgeo.org 
Sent: Sunday, August 17, 2014 9:02 PM
Subject: [Qgis-user] print composer
 


dear all i need to export a map i created...  in qgis everytinhg is allright 
but in the print composer all the places appear some meters up to 
northwest. i reaaly need to send this today... can someone help??.. 

thanks in advance :)


-- 

daniel pinto
arqueólogo
daniel.ar.pi...@gmail.com
tel:96 646 0031 - 91 869 1397
rua de Arouca, nº 10, 1º esq, 3810-050 - Aveiro

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[Qgis-user] QGIS reprojection broken?

[Brent Wood]

Hi,

Apologies for an attachment to a list email, but I kept it small...


The attached  image shows some Antarctic data (grounding line  ice shelf 
extent) with a polygon overlayed. 
I created the polygon by editing a text (csv) file with lat/longs:
x,y
150,-60
150,-85
255,-85
255,-60

I opened it in QGIS (CRS=EPSG:4326)  created a new polygon shapefile layer 
(snapping to the points) to create a box defined by the same points.

Then I opened the Antacrctic layers (WFS from NSIDC 
http://nsidc.org/cgi-bin/atlas_south in EPSG:3031 - Antarctic Polar 
Stereographic)

 
I set the QGIS project CRS to a user defined one, same as EPSG:3031, but with 
+lon_0=180 instead of 0 which gives a 180 up map instead of 0 up.

The map is displayed as in the attached image - a strange box is drawn to the 
north of the box polygon, the eastern points  vertices do not appear - and if 
the layer is editable, they cannot be clicked on as nodes. 

If I swap the CRS to EPSG:3031, the inverted map renders the box better (no 
extra box outside it) but the points are still rendered in a different location 
to the polygon vertices - but they share the same coordinates.

I can usually work around 180 issues in QGIS by using longitudes in the 0-360 
space, but it seems to me that there are some issues with QGIS working in a 
polar projection across 180.

Does anyone know if there is a way to solve this, or is this an inherent 
problem for now? In the short term I need to decide whether or not I can 
progress with QGIS in the cross 180 polar space, or will need to find another 
tool.

In the longer term, if this is an issue, I'd like to work with a developer to 
resolve it - and may be able to fund (some of?) the work required.


Thanks,

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Re: [Qgis-user] QGIS reprojection broken?

[Brent Wood]

Hi Nyall,


I should have mentioned I'm using v2.2, which is why I figure the option you 
suggest I turn off is not available on my version??

The only layer rendering options I can find are transparency  blending under 
the style menu.

I also assume that it is off anyway in 2.2, if it is not in the menu?


Thanks

  Brent




 From: Nyall Dawson nyall.daw...@gmail.com
To: Brent Wood pcr...@pcreso.com 
Cc: qgis-user qgis-user@lists.osgeo.org 
Sent: Friday, August 8, 2014 1:57 PM
Subject: Re: [Qgis-user] QGIS reprojection broken?
 


Hi Brent,
Try switching off simplification in the layer properties - rendering tab. 
Does that help?
Nyall



On 08/08/2014 11:42 am, Brent Wood pcr...@pcreso.com wrote:

 Hi,

 Apologies for an attachment to a list email, but I kept it small...

 The attached  image shows some Antarctic data (grounding line  ice shelf 
 extent) with a polygon overlayed. 
 I created the polygon by editing a text (csv) file with lat/longs:
 x,y
 150,-60
 150,-85
 255,-85
 255,-60

 I opened it in QGIS (CRS=EPSG:4326)  created a new polygon shapefile layer 
 (snapping to the points) to create a box defined by the same points.

 Then I opened the Antacrctic layers (WFS from NSIDC 
 http://nsidc.org/cgi-bin/atlas_south in EPSG:3031 - Antarctic Polar 
 Stereographic)
  
 I set the QGIS project CRS to a user defined one, same as EPSG:3031, but with 
 +lon_0=180 instead of 0 which gives a 180 up map instead of 0 up.

 The map is displayed as in the attached image - a strange box is drawn to the 
 north of the box polygon, the eastern points  vertices do not appear - and 
 if the layer is editable, they cannot be clicked on as nodes. 

 If I swap the CRS to EPSG:3031, the inverted map renders the box better (no 
 extra box outside it) but the points are still rendered in a different 
 location to the polygon vertices - but they share the same coordinates.

 I can usually work around 180 issues in QGIS by using longitudes in the 0-360 
 space, but it seems to me that there are some issues with QGIS working in a 
 polar projection across 180.

 Does anyone know if there is a way to solve this, or is this an inherent 
 problem for now? In the short term I need to decide whether or not I can 
 progress with QGIS in the cross 180 polar space, or will need to find another 
 tool.

 In the longer term, if this is an issue, I'd like to work with a developer to 
 resolve it - and may be able to fund (some of?) the work required.


 Thanks,

    Brent Wood


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