Re: [Qgis-user] How set real origin on a false origin dataset

2019-11-17 Thread Lens Paul

Hi Andrea,

False origins happens often with local topographical surveys, with also
a false altitude origin. Architectural plans are sometimes even more
tricky: rotated, or with a centimetric or millimetric scale instead of a
metric scale. A way is to transform the data with a CAD software when
available. Even then, problems can arise e.g. when rescaling some objects.

I suppose a workaround in your case  would be to use the "move" command
and to snap to a point drawn at the correct coordinates. This could be
cumbersome when there are many layers to edit, which is often the case,
unless you import the dxf as a unique layer

If your data consist merely of point data (no polylines), it should be
possible, after conversion of the dxf in a shapefile, to create the  X,
Y attributes using the field calculator, and to recalculate these
attributes with the same tool.

In the case of polylines, there is the possibility to extract vertices.
But I do not know if there is a possibility to recreate the polylines
after the recalculation of the X, Y attributes.

Dxf conversion is a complicated subject. The evolution of the
capabilities of QGIS in that field is amazing. Many thanks to the
developers for that.

Hope this helps,

Paul

Le 13/11/2019 à 14:04, Andrea Peri a écrit :

Hi,
We have a dxf containings geograph data in false.origin .
I'm searching a solution to put a kind of origin (x,y) to sum to every
point of the data. Is possible to set an origin.to 
a dataset in qgis ?

Thx.
Andrea.


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Re: [Qgis-user] False positive with norton + whitelisting

2016-12-19 Thread Lens Paul

Thanks for your response and also to Paolo's response.

I'm ready to help as far as I can with my limited skills.

The "vendor's form" (https://submit.symantec.com/whitelist/isv/) 
specifies that a corporate email adress is mandatory  to make a 
proactive whitelisting:

--excerpt
Software Whitelisting Request

This form is for use by Vendors wishing to have their software 
proactively whitelisted by Symantec.


Important information
• Whitelisting is file/version specific. Future versions will not be 
whitelisted by default.
• New versions of your software should be submitted for whitelisting as 
they become available.
• For identity verification, a corporate email address is mandatory. 
Requests from free email domains will not be processed.

---end of excerpt

NB
In fact, the "vendor's" form is very much alike the user's form 
(https://submit.symantec.com/false_positive/) and the result seems also 
to be alike.


The only difference is that the user's form begins with the question 
"When did the detection .. occur?"; one of the possible responses is 
"the options provided do not apply".

Than you have to specify the kind of Symantec product.

I recall having read that the recognition is "cloud" based, whitelisting 
for one product holds for all "cloud based" Symantec products.


So there is the possibility to just fill the user's form  (which is in 
my reach) in case there is no other way!



Le 19/12/2016 à 14:59, Matthias Kuhn a écrit :

Thanks Paul,

Yes indeed it looks like every single version will need to be whitelisted.

It would be interesting for us to upload every release, but it looks
like it's a manual process that someone will need to take care of (at
least it doesn't look like it's a scriptable API):

https://submit.symantec.com/whitelist/isv/

It also looks like code signing would be an alternative, but from a
quick look at the page https://submit.symantec.com/whitelist/ , this
mainly looks like a process to generate business for some CA with no
open alternatives.
But if someone has more experience in this area, it will be interesting
to hear insights.

I think the most sustainable approach is if

  * someone volunteers to manually upload the files after new releases
  * or possibly (if it helps...) someone sponsors a certificate

Matthias

On 12/19/2016 02:36 PM, Lens Paul wrote:

Thanks Matthias,

I just received the answer of Symantec (Norton), here are some excerpts.




Upon further analysis and investigation we have verified your submission
and, as such, the detection(s) for the following file(s) will be removed
from our products:

 File name: qgis_bin.exe
 MD5: 99002dab0a0525a941b4a473fe4b058b
 SHA256:
5f1fe42b904298eecbb1c0bdc3cbb4a28dcbace3b1b65a250ef800d8158a4f51
 Note: Whitelisting may take up to 24 hours to take effect via Live
Update


If detection persists, please contact support:
* Norton:https://support.norton.com/sp/en/us/home/current/info

...

If you are a software vendor and would like to upload your software for
proactive whitelisting, please complete one of the following forms:
* If you are BCS customer:https://submit.symantec.com/whitelist/bcs
* Otherwise:https://submit.symantec.com/whitelist

For more information on best practices to reduce false positives:
http://www.symantec.com/content/en/us/enterprise/white_papers/b-to_increase_downloads-instill_trust_first_WP.en-us.pdf

-

Does it mean that they whitelist just one version of QGIS (in relation
with the signature MD5)?
Which means that every new version should also be submitted to them?
(luckily, the procedure is easy and not time-consuming).

They also recommend a "software vendor" procedure, which is beyond my
understanding.


Regards and thanks to all the developers for the marvelous development
of QGIS,

Paul
Le 19/12/2016 à 12:13, Matthias Kuhn a écrit :

Thank you Paul,

We have received similar reports in the past already.

I think what you have done is the best approach: notify the antivirus
producer about false alerts as a user and provide them with the required
information (qgis-bin.exe etc.) to investigate the problem and update
the heuristics or white list accordingly.

With the information available from the general description of the
heuristics, there is normally not a lot we can do to "solve" the problem
from our side. If Norton asks more information, please just post again
either on this list or on the qgis developer list.

Thanks again
Matthias


On 12/19/2016 12:04 PM, Lens Paul wrote:

Hi all,

For info to Norton Security Users,

Using QGIS 2.18.1 on Windows 7 sp1 64 bits.

Norton deleted twice, without warning, qgis-bin.exe + many .py files on
my computer + modified many registry entries.

Message was "WS.Reputation.1", linked to the so-called SONAR function of
Norton S

Re: [Qgis-user] False positive with norton + whitelisting

2016-12-19 Thread Lens Paul

Thanks Matthias,

I just received the answer of Symantec (Norton), here are some excerpts.




Upon further analysis and investigation we have verified your submission and, 
as such, the detection(s) for the following file(s) will be removed from our 
products:

File name: qgis_bin.exe
MD5: 99002dab0a0525a941b4a473fe4b058b
SHA256: 5f1fe42b904298eecbb1c0bdc3cbb4a28dcbace3b1b65a250ef800d8158a4f51
Note: Whitelisting may take up to 24 hours to take effect via Live Update


If detection persists, please contact support:
* Norton:https://support.norton.com/sp/en/us/home/current/info

...

If you are a software vendor and would like to upload your software for 
proactive whitelisting, please complete one of the following forms:
* If you are BCS customer:https://submit.symantec.com/whitelist/bcs
* Otherwise:https://submit.symantec.com/whitelist

For more information on best practices to reduce false positives:
http://www.symantec.com/content/en/us/enterprise/white_papers/b-to_increase_downloads-instill_trust_first_WP.en-us.pdf
-

Does it mean that they whitelist just one version of QGIS (in relation 
with the signature MD5)?
Which means that every new version should also be submitted to them? 
(luckily, the procedure is easy and not time-consuming).


They also recommend a "software vendor" procedure, which is beyond my 
understanding.



Regards and thanks to all the developers for the marvelous development 
of QGIS,


Paul
Le 19/12/2016 à 12:13, Matthias Kuhn a écrit :

Thank you Paul,

We have received similar reports in the past already.

I think what you have done is the best approach: notify the antivirus
producer about false alerts as a user and provide them with the required
information (qgis-bin.exe etc.) to investigate the problem and update
the heuristics or white list accordingly.

With the information available from the general description of the
heuristics, there is normally not a lot we can do to "solve" the problem
from our side. If Norton asks more information, please just post again
either on this list or on the qgis developer list.

Thanks again
Matthias


On 12/19/2016 12:04 PM, Lens Paul wrote:

Hi all,

For info to Norton Security Users,

Using QGIS 2.18.1 on Windows 7 sp1 64 bits.

Norton deleted twice, without warning, qgis-bin.exe + many .py files on
my computer + modified many registry entries.

Message was "WS.Reputation.1", linked to the so-called SONAR function of
Norton Security.

This is how it works : "WS.Reputation.1 is a detection for files that
have a low reputation score based on analyzing data from Symantec’s
community of users and therefore are likely to be security risks."

The Norton (french-speaking) Assistance  confirmed me it is a false
positive. I asked them to put QGIS on the White List.

NB: this is not the first time it happens for QGIS, see:
https://community.norton.com/en/forums/qgis-issue.

Afterwards, I submitted also a demand for whitelisting, as a Norton
user, on the Norton website
(https://submit.symantec.com/false_positive/standard/), where
qgis-bin.exe can be uploaded for testing.

I hope this will prevent any other disturbing false positive on Norton
products. Any suggestion?

Paul

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[Qgis-user] False positive with norton + whitelisting

2016-12-19 Thread Lens Paul

Hi all,

For info to Norton Security Users,

Using QGIS 2.18.1 on Windows 7 sp1 64 bits.

Norton deleted twice, without warning, qgis-bin.exe + many .py files on 
my computer + modified many registry entries.


Message was "WS.Reputation.1", linked to the so-called SONAR function of 
Norton Security.


This is how it works : "WS.Reputation.1 is a detection for files that 
have a low reputation score based on analyzing data from Symantec’s 
community of users and therefore are likely to be security risks."


The Norton (french-speaking) Assistance  confirmed me it is a false 
positive. I asked them to put QGIS on the White List.


NB: this is not the first time it happens for QGIS, see: 
https://community.norton.com/en/forums/qgis-issue.


Afterwards, I submitted also a demand for whitelisting, as a Norton 
user, on the Norton website 
(https://submit.symantec.com/false_positive/standard/), where 
qgis-bin.exe can be uploaded for testing.


I hope this will prevent any other disturbing false positive on Norton 
products. Any suggestion?


Paul

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Re: [Qgis-user] problem with dxf2shp

2015-06-26 Thread Lens Paul

Hi Daniel,

I have not made that kind of conversion for a while now, probably back 
to QGIS 1.5.


At that time, dxf2shp didn't keep any 3D information indeed.
- v.in.dxf in GRASS worked well;
- if you have a raster, extracting contours with the QGIS interpolate 
command was succesfull too (a workaround could then be to create a 
raster using your contours lines, and then back to the contour lines 
with interpolate).


Hope this helps,

Paul

Le 25/06/2015 23:43, Daniel Camilo Largo Gaviria a écrit :

Hi,
i have a problem with QGIS. I need to convert dxf to shp. When i use 
dxf2shp function  i can´t to see the attribute, for example:
i need to convert contours (topography) of dxf to shp, but, the 
attribute of height don't appears.

Someone know how convert and import full attribute?

tks


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Re: [Qgis-user] Extract 3d attribute information

2015-05-31 Thread Lens Paul

Hi, Christof!

I didn't practice 3D for a while and I'm not a geek either.

QGIS does not explicitely treat vectorial 3D information, but some 
(many?) tools treat the vectors without losing Z values.
Besides, QGIS evolves so fast that it is difficult to keep track of the 
way it handles z information.


If I remember rightly (probably QGIS 2.x at that time), for those 3D 
compatible tools,  lines are not treated on a per vertex basis but with 
one z value for the whole line, keeping just the z value of one of the 
vertices I suppose.


 To get the mean value for  line made of vertices with different z 
values, I would try  this :
- decomposing (in Grass I suppose) the line in points with the z value  
in one attribute field and a line identifier in another field;

- calculating the mean z value in association with the line identifier;
- recomposing the line with the help of the line identifier.


Hope this helps,

Paul

Le 27/05/2015 16:19, Christof Kammerer a écrit :


Hi!

I have a 3d shp-file containing building outlines. What I need is an 
attribute field with the value of the average altitude of the outline 
of every single building.


Is that possible with qgis/grass gis plugin? If not which other tools 
exist to get this result?



Sincerely, Christof



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[Qgis-user] QGIS and Antivirus software?

2014-05-09 Thread Lens Paul

Does anyone experience problems with antivirus software.

In my case, QGIS (1.8 than 2.2) hangs after loading several layers of a 
rather big project (backups and similar projects won't open either). The 
processor works at  100% and the whole system almost freezes.


I  tested load time of smaller projects, activating/deactivating the 
antivirus. Load time more than doubles when the antivirus is activated.


Vista was updated the same time I installed the antivirus. The same big 
project file could be opened in Ubuntu (where I went into other kind of 
problems), so that there seems to be no corruption of the data files. 
Grass plugin is working all right on smaller files.

Whence I cannot figure any other cause than the antivirus.

Using Bitdefender on Vista sp2.

Thanks for any suggestions,

Paul

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Re: [Qgis-user] Ubuntu 14.04 and qgis

2014-05-05 Thread Lens Paul

Hi Randy,

Your message came when I was about to send a message explaining my problems.

Using QGIS 2.2+Grass on Ubuntu 14.04 LTS, installed in accordance with 
the instructions given on the alldownloads.html page on qis.org.


At first, it worked very well. QGIS could even open a project file which 
didn't  open on another computer.
After several boots,  Ubuntu began to display an internal error message, 
than it hanged on next reboot, displaying running in low graphics mode 
(the graphic card is in the chipset: Intel(R) 82945G Express Chipset 
Family).


After reinstallation of Ubuntu and QGIS, QGIS 2.2 opened the project 
file but could not load the layers.
In fact, it adds 1 to the partition name (in this case the NTFS 
partition named R3SERVE becomes R3SERVE1) and whence it doesn't 
recognise the path. A weird behaviour since Ubuntu still displays the 
correct name R3SERVE!


Here is a sample (I deleted several lines) of the messages displayed in 
Terminal:


--
plfixe2@plfixe2-Dimension-5100:~$ qgis
Warning: loading of qt translation failed 
[/usr/share/qt4/translations/qt_en_US]
Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already 
tracking action Toolbox under id 255


(qgis.bin:4353): Gtk-WARNING **: Attempting to read the recently used 
resources file at `/home/plfixe2/.local/share/recently-used.xbel', but 
the parser failed: L'ouverture du fichier 
« /home/plfixe2/.local/share/recently-used.xbel » a échoué : Permission 
non accordée.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 4: 
`/media/plfixe2/R2SERVE/SIG_proj/MB103_Ille/Donnees/00-general/4_PPNC/68_68_w.jpg' 
does not exist in the file system,

and is not recognised as a supported dataset name.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 6: EPSG PCS/GCS code 103300 not found in EPSG support files.  Is 
this a valid

EPSG coordinate system?
ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

Warning: Couldn't open the data source: 
/media/plfixe2/R2SERVE/SIG_proj/MB103_Ille/Donnees/00-general/GPS/AOU-11-11 
053928 PM.gpx

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.
---

Besides after reboot, Ubuntu displays again an internal error problem.  
I suppose it is going to hang again on the next reboots.



Hope this helps,


Paul

Le 5/05/2014 15:38, Randal Hale a écrit :
For those of you on Ubuntu 14.04 running qgis from the repo: deb 
http://qgis.org/debian trusty main - you will be getting an upgrade 
notice from the software update application (ubuntu and xubuntu) on 
upgrading qgis. I would hold off just a bit - I upgraded and there are 
some compatibilities issues that kill your install of qgis.


Randy



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Re: [Qgis-user] Ubuntu 14.04 and qgis

2014-05-05 Thread Lens Paul


Thanks a lot for all these hints, Randy.

I'll try xubuntu 14. LTS.

The ubuntugis team currently proposes QGIS 1.8 as a stable version  
(PPA  or Personal Package Archives) (QGIS 2.0 is proposed as current 
version but not for (x)ubuntu 14).
Unfortunately, the stable PPA's  are only available for former versions 
of (x)ubuntu (12 LTS), 13.). Now, former versions of (x)Ubuntu seem to 
be no longer available for download.


Rolling back to a former version of QGIS in Linux (x)ubuntu current 
release seems to be rather tricky (it is much easier in Windows thanks 
to OSGEO4W, a very versatile tool). Is there  a not too complicated  way 
to do it?



Your guess is right, Randy: dual boot on a spare PC, alongside Win XP 
(kept in case e.g.of missing a linux driver for the Canoscan scanner). 
Both boot partitions are on the same HD, data's are on a second HD.


Thanks in advance to anyone giving a suggestion about a stable 
combination (s)Ubuntu/QGIS?


Paul

Le 5/05/2014 18:16, Randal Hale a écrit :
Mine was actually working quite well before the message about 
upgrading. I did the upgrade on a test machine - so my main 
workstation is working happily along. I'm actually using it now to 
finish up one forestry project.


As far as Operating systems - Try Xubuntu. It's a lot less resource 
heavy and that's what I've been running for several years and am quite 
happy with it. I tend to drift about once a year and trying something 
different but come back to it after a while. Unity (while enticing) is 
uses way to much memory for my inner happiness.


It almost sounds like an operating system issue vs QGIS.or there 
is some corruption or something happening during the install. I assume 
since you are using NTFS you are dual booting? Or I guess I should say 
dual partitions?


Randy


-
Randal Hale, GISP
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 rjh...@northrivergeographic.com
twitter:rjhale
http://about.me/rjhale

On 05/05/2014 12:03 PM, Lens Paul wrote:

Hi Randy,

Your message came when I was about to send a message explaining my 
problems.


Using QGIS 2.2+Grass on Ubuntu 14.04 LTS, installed in accordance 
with the instructions given on the alldownloads.html page on qis.org.


At first, it worked very well. QGIS could even open a project file 
which didn't  open on another computer.
After several boots,  Ubuntu began to display an internal error 
message, than it hanged on next reboot, displaying running in low 
graphics mode (the graphic card is in the chipset: Intel(R) 82945G 
Express Chipset Family).


After reinstallation of Ubuntu and QGIS, QGIS 2.2 opened the project 
file but could not load the layers.
In fact, it adds 1 to the partition name (in this case the NTFS 
partition named R3SERVE becomes R3SERVE1) and whence it doesn't 
recognise the path. A weird behaviour since Ubuntu still displays the 
correct name R3SERVE!


Here is a sample (I deleted several lines) of the messages displayed 
in Terminal:


--
plfixe2@plfixe2-Dimension-5100:~$ qgis
Warning: loading of qt translation failed 
[/usr/share/qt4/translations/qt_en_US]
Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): 
Already tracking action Toolbox under id 255


(qgis.bin:4353): Gtk-WARNING **: Attempting to read the recently used 
resources file at `/home/plfixe2/.local/share/recently-used.xbel', 
but the parser failed: L'ouverture du fichier « 
/home/plfixe2/.local/share/recently-used.xbel » a échoué : Permission 
non accordée.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 4: 
`/media/plfixe2/R2SERVE/SIG_proj/MB103_Ille/Donnees/00-general/4_PPNC/68_68_w.jpg' 
does not exist in the file system,

and is not recognised as a supported dataset name.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 6: EPSG PCS/GCS code 103300 not found in EPSG support files.  
Is this a valid

EPSG coordinate system?
ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.

Warning: Couldn't open the data source: 
/media/plfixe2/R2SERVE/SIG_proj/MB103_Ille/Donnees/00-general/GPS/AOU-11-11 
053928 PM.gpx

ERROR 10: Pointer 'hDS' is NULL in 'OGR_DS_Destroy'.
--- 



Besides after reboot, Ubuntu displays again an internal error 
problem.  I suppose it is going to hang again on the next reboots.



Hope this helps,


Paul

Le 5/05/2014 15:38, Randal Hale a écrit :
For those of you on Ubuntu 14.04 running qgis from the repo: deb 
http://qgis.org/debian trusty main - you will be getting an upgrade 
notice from the software update application (ubuntu and xubuntu) on 
upgrading qgis. I would hold off just a bit - I upgraded and there 
are some compatibilities issues that kill your install of qgis.


Randy



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Re: [Qgis-user] Export a vector shapefile to XYZ

2014-03-21 Thread Lens Paul

Hello Lester,

I tried converting  a 3D point shapefile using save layer as + 
GEOMETRY=AS_XYZ (still using QGIS 1.8).

It didn't work but I do not have much time to try again.

Joined to this mail, you'll find a table with some information about the 
conversion of 3D GIS/CAD Data.


It's a rough outline, very incomplete. It helps me finding conversion 
routes.


Take care, there may be mistakes.

Perhaps this file could be completed by other QGIS/GRASS user's, 
experienced in 3D conversions?


Hope this helps,

Paul

Le 20/03/2014 12:45, Lester Anderson a écrit :

Hello,
Is it possible to export a shapefile into XYZ from QGIS? It is partly 
possible via the GMT option (save layer as) but not readily useable.

Cheers
Lester


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3D_Conversion(QGIS+GRASS+gvSIG).ods
Description: application/vnd.oasis.opendocument.spreadsheet
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Re: [Qgis-user] nodata color in rasters

2014-03-10 Thread Lens Paul


Nodata has a value: you can use a custom palette and asign a colour 
to that value.


I suppose the Nodata value is the value automatically set as transparent 
under the tab Transparency in the raster's Layer Properties.


In my case, this value is: -3.40282e+38. (other possible values? 255, 
-32768, , ... ?)


Paul

Le 10/03/2014 9:03, Paolo Cavallini a écrit :

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Il 09/03/2014 21:23, Carol Kraemer ha scritto:

Antonio,

I also don't see a way of making nodata a different color, however, there may 
be a
way to trick it by redefining nodata to be a pixel value then using*Singleband
Psuedocolors* under /Properties  Styles  Band Rendering/ as shown below.

Nodata has a value: you can use a custom palette and asign a colour to that 
valure.
All the best.

- -- 
Paolo Cavallini - www.faunalia.eu

Corsi QGIS e PostGIS: http://www.faunalia.eu/training.html
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Version: GnuPG v1
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iEYEARECAAYFAlMdcegACgkQ/NedwLUzIr42dQCeNZdqU5ZW9Vj5c9vkomcNLYNO
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