Re: [Qgis-user] Semi-Automatic Classification Plugin (SCP)

2024-09-04 Thread Andrea Giudiceandrea via QGIS-User

Julio Andrade julio.andrade at ufrpe.br
Wed Sep 4 11:22:41 PDT 2024



Boa tarde estou com problema no Semi-Automatic Classification Plugin (SCP), sou 
professor da Universidade Federal Rural de Pernambuco, testei esse plugin em 
vários computadores da Rural e não consigo instalar esse plugin.


Hi Julio,
it would have been useful if you had provided the full error log and the 
details of your system (Operative System, Operative System version, QGIS 
version, plugin version).


Anyway, in order to properly install the Semi-Automatic Classification 
Plugin, you need to follow the instructions at 
https://semiautomaticclassificationmanual.readthedocs.io/en/latest/installation.html


You can contact the author, request help and report issues about such 
plugin at 
https://github.com/semiautomaticgit/SemiAutomaticClassificationPlugin 
and https://www.facebook.com/groups/661271663969035


Regards.

Andrea



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Re: [Qgis-user] seeing coordinates in the data table

2024-09-04 Thread Andrea Giudiceandrea via QGIS-User

Greg Troxel gdt at lexort.com
Mon Sep 2 12:37:58 PDT 2024



When I open the data table, I can't find a way to see the geometry
object, in either layer CRS or project CRS.


As previously pointed out by Andreas, you can create a real or a virtual 
field using the Field Calculator [1].
Depending on how you actually want to "see" the geometry of the feature, 
you can create an expression [2] based on the available functions [3].
In general, you can use the geom_to_wkt [4] function in order to obtain 
a WKT string representation of the geometry.


Regards.

Andrea


[1] 
https://docs.qgis.org/3.34/en/docs/user_manual/working_with_vector/attribute_table.html#vector-field-calculator

[2] https://docs.qgis.org/3.34/en/docs/user_manual/expressions/index.html
[3]https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html
[4] 
https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#geom-to-wkt

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Re: [Qgis-user] Z($geometry), CRS and transforms: buggy?

2024-09-04 Thread Andrea Giudiceandrea via QGIS-User

Greg Troxel gdt at lexort.com
Mon Sep 2 06:24:36 PDT 2024



I think that's unfortunate, or that the other way being missing is a bug.


I don't think so. AFAIK it is the intended behaviour. QGIS has usually a 
modular approach.
Having a geometry object, you can transform the coordinates of such 
geometry using the transform function [1]. I don't think there is the 
need of having XP, YP and PZ functions alongside X, Y and Z functions.
Anyway AFAIK the support for vertical datum handling in QGIS is being 
implemented [2] [3] and the actual implementation depends on the QGIS 
version used.


Regards.

Andrea


[1] 
https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#transform

[2] https://github.com/qgis/QGIS-Enhancement-Proposals/issues/267
[3] 
https://github.com/qgis/QGIS/pulls?q=is%3Apr+author%3Anyalldawson+vertical

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Re: [Qgis-user] Z($geometry), CRS and transforms: buggy?

2024-09-02 Thread Andrea Giudiceandrea via QGIS-User

Greg Troxel gdt at lexort.com
Sun Sep 1 16:14:34 PDT 2024



The TL:DR: is that I believe

  Z($geometry) returns the Z value from the geometry in the layer,
  without regard to the CRS.  It *should* return the Z component  after
  transforming from layer CRS to project CRS.  (qgis 3.34.10)


Hi Greg,
the z(@geometry) function as well as both x(@geometry) and y(@geometry) 
functions always return the actual geometry's x, y, z coordinate 
regardless of the layer's CRS or the project's CRS.


I.e. @geometry (or the deprecated $geometry) returns only a geometry 
object that doesn't contain any info about the CRS.


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] QGis on a Mac

2024-08-29 Thread Andrea Giudiceandrea via QGIS-User

Don Williams donwilliams_is at mac.com



Really struggling to work out what the path should be to bring in 150,000 png 
tiles based in a folder called OS Opendata on a Mac into xyz tiles in QGis?
Probably asked a million times but all I see in the help pages is to use a url 
but these all reside on the hard-drive?


Hi Don,
I think you will find the needed info in the QGIS Desktop User Guide / 
Manual at 
https://docs.qgis.org/3.34/en/docs/user_manual/managing_data_source/opening_data.html#using-xyz-tile-services


You can open the relevant page of the QGIS Desktop User Guide / Manual 
just clicking on the Help button which is available in almost any QGIS 
dialog windows.


Regards.

Andrea
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Re: [Qgis-user] Create a polygon with a specific area size

2024-08-27 Thread Andrea Giudiceandrea via QGIS-User

Ujaval Gandhi ujaval at spatialthoughts.com
Tue Aug 27 07:28:22 PDT 2024



If you 'Identify' the polygon, it will display the polygon Area in square meters
under the 'Derived' section. Let's call this X. If your desired area is Y,
the scaling factor is Y/X. Use this scaling factor and scale it using the
'Scale' tool in the Advanced Digitizing toolbar.


Hi all,
AFAIK the correct scaling factor to use is not Y/X, but the square root 
of Y/X instead.


Regards.

Andrea
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Re: [Qgis-user] Install qgis-grass-plugin QGIS 3.38 and GRASS 8.4 on Ubuntu 22 jammy -

2024-08-06 Thread Andrea Giudiceandrea via QGIS-User
Amedeo Fadini amefad at gmail.com 
mailto:qgis-user%40lists.osgeo.org?Subject=Re%3A%20%5BQgis-user%5D%20Install%20qgis-grass-plugin%20QGIS%203.38%20and%20GRASS%208.4%0A%20on%20Ubuntu%2022%20jammy%20-&In-Reply-To=%3CCAKGZ3Gd%2B72FsEh%2BGRFD_gAdHQHPOC1KpCC%3D-PM_kQQd%2BJM5TBg%40mail.gmail.com%3E
Mon Aug 5 14:02:10 PDT 2024

> See also:
> https://github.com/qgis/QGIS/issues/49030
> https://www.qgis.org/resources/installation-guide/#note-4
>
>
> I'll give it a try with plain apt as it's sayng andreagiudiceandrea in the
fi rst link


Hi Amedeo,
I can confirm that just following the "Quickstart" installation guide available 
on the QGIS website [1], it is possible to currently install QGIS 3.38.1 
(3d4177afc6), GRASS-GIS 7.8.7 (available in the default Ubuntu repository for 
22.04 Jammy Jellyfish) and the QGIS GRASS plugin on Ubuntu 22.04.4.

If you instead add the ubuntugis-unstable ppa and use the 
https://qgis.org/ubuntugis repository, then you will currently face the error:
qgis-plugin-grass : Depends: grass832 but it is not installable

since the grass832 package is currently no longer available in 
ubuntugis-unstable (while I suppose it was instead available at the time that 
the latest qgis and qgis-plugin-grass packages were built).

In this case you need to use the https://qgis.org/ubuntugis-nightly-release 
repository instead of the https://qgis.org/ubuntugis repository in order to 
install qgis and qgis-plugin-grass built with the latest version of GRASS-GIS 
currently available in ubuntugis-unstable. This way, you will currently install 
the nightly debug build QGIS 3.38.1 (d6b0e3930f4) and GRASS-GIS 8.4.0.

 

Best regards.

Andrea Giudiceandrea

 

 

[1] https://www.qgis.org/resources/installation-guide/#quickstart___
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Re: [Qgis-user] Point order in WKT export from polygon layer

2024-08-05 Thread Andrea Giudiceandrea via QGIS-User

[Qgis-user] Point order in WKT export from polygon layer
Reetz, Michael (NLPVW) Michael.Reetz at nlpvw.niedersachsen.de
Mon Aug 5 05:33:31 PDT 2024



I've created a csv-file with coordinates in WKT-format by exporting a polygon layer with the 
"Save object as ..."-option ("Objekte speichern als ..." in the German QGIS 
version). I need this for querying data from GBIF via their API using JSON input. That has worked 
for the last years. But using the same JSON files this year gives an error because the point order 
is clockwise. I've found that according to the OGC standard the order should be counter clockwise 
for polygons and clockwise for excluded areas inside a polygon. It seems as if GBIF is following 
this standard now.


Hi Michael,
I suppose you are exporting the layer in the CSV format using the Layer 
option GEOMETRY = AS_WKT.


Instead, I suggest you to use the Field Calculator to add a real or 
virtual field for such layer and populate it with the WKT representation 
of the geometry [1]. You can force a particular winding of the geometry 
using either the force_polygon_ccw [2] or force_polygon_cw [3] function.


For example, using the following expression:

geom_to_wkt(  force_polygon_ccw( @geometry ) )

Best regards.

Andrea Giudiceandrea


[1] geom_to_wkt function 
https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#geom-to-wkt
[1] 
https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#force-polygon-ccw
[2] 
https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#force-polygon-cw

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Re: [Qgis-user] LAS and LAZ files cannot be opened by this QGIS install.

2024-07-30 Thread Andrea Giudiceandrea via QGIS-User
> Il 30/07/2024 08:46 CEST Andrea Giudiceandrea  ha 
> scritto:
> Another possible workaround could be to use Flatpack to install QGIS 
> https://qgis.org/resources/installation-guide/#flatpak

I forgot to mention that also QGIS 3.38.1 installed via conda-forge is able to 
open the laz files.

Regards.

Andrea
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Re: [Qgis-user] QGIS.org new website now online

2024-07-30 Thread Andrea Giudiceandrea via QGIS-User
> Greg Troxel gdt at lexort.com 
> mailto:qgis-user%40lists.osgeo.org?Subject=Re%3A%20%5BQgis-user%5D%20QGIS.org%20new%20website%20now%20online&In-Reply-To=%3Crmi34nyrdmw.fsf%40s1.lexort.com%3E
> Wed Jul 24 08:52:23 PDT 2024


> I'm writing here because I'm having a hard time sorting "substantive"
> being spelling with serious content issues not.  I have a lot of
> comments but I think the above would sort them into things that are not
> clearly micro bugs.

Hi Greg,
I think it would be useful if you wrote your suggestions to the Developer 
mailing list or created a new issue report on 
https://github.com/qgis/QGIS-Website

Regards.

Andrea___
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Re: [Qgis-user] LAS and LAZ files cannot be opened by this QGIS install.

2024-07-30 Thread Andrea Giudiceandrea via QGIS-User
> Il 30/07/2024 08:46 CEST Andrea Giudiceandrea  ha 
> scritto:
> Hi bitrat,
> for more info, please see the comments at 
> https://github.com/qgis/QGIS/issues/53348 . Martin Dobias suggested that 
> "if you use QGIS packages based on Ubuntugis, PDAL support will be 
> included, because the Ubuntugis repository contains PDAL packages as well."

Anyway, FYI, I can open laz files using QGIS 3.38.1 installed on Ubuntu 22.04 
Jammy Jellyfish with packages from default https://qgis.org/ubuntu repository 
(not the ubuntugis one), since PDAL is available in the Ubuntu repositories for 
Jammy Jellyfish https://launchpad.net/ubuntu/+source/pdal
The PDAL package should also be available in the Debian repositories for 
bullseye 
https://packages.debian.org/search?keywords=pdal&searchon=names&suite=all§ion=all

Regards.

Andrea
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Re: [Qgis-user] LAS and LAZ files cannot be opened by this QGIS install.

2024-07-29 Thread Andrea Giudiceandrea via QGIS-User

bitrat qgis.raro at fastmail.fm
Mon Jul 29 17:07:15 PDT 2024



I installed QGIS specifically to view LIDAR data but, when I tried to open a .LAZ file, I 
got "LAS and LAZ files cannot be opened by this QGIS install."



I installed on Debian from the instructions here:
https://www.qgis.org/resources/installation-guide/#debian-ubuntu


Hi bitrat,
for more info, please see the comments at 
https://github.com/qgis/QGIS/issues/53348 . Martin Dobias suggested that 
"if you use QGIS packages based on Ubuntugis, PDAL support will be 
included, because the Ubuntugis repository contains PDAL packages as well."


Another possible workaround could be to use Flatpack to install QGIS 
https://qgis.org/resources/installation-guide/#flatpak


Regards.

Andrea
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Re: [Qgis-user] removing fields from drag and drop designer (leads to segmentation fault)

2024-07-28 Thread Andrea Giudiceandrea via QGIS-User

Hi Roland,
I think you just need:

edit_form_config.addTab(QgsAttributeEditorField(tab))


instead of:

edit_form_config.addTab(tab)


to avoid the crash.

Regards.

Andrea
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Re: [Qgis-user] QGIS 3.38 for MAC Intel downloads as 3.36.3

2024-06-30 Thread Andrea Giudiceandrea via QGIS-User

Hii all,
the QGIS Website https://qgis.org/en/site/forusers/download.html#mac now 
reports the actual currently available versions of the dmg installer of 
QGIS for macOS.


Regards.

Andrea
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Re: [Qgis-user] QGIS 3.38 for MAC Intel downloads as 3.36.3

2024-06-30 Thread Andrea Giudiceandrea via QGIS-User

Alexandre Neto senhor.neto at gmail.com
Sat Jun 29 15:09:47 PDT 2024



You can also install the most recent versions of QGIS using conda-forge.


I think it would be useful if this information and related instructions 
were listed on the QGIS Website.


Regards.

Andrea
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Re: [Qgis-user] QGIS 3.38 for MAC Intel downloads as 3.36.3

2024-06-29 Thread Andrea Giudiceandrea via QGIS-User

Andrew Duncan adaw at bigpond.com
Fri Jun 28 21:44:52 PDT 2024



Hi, I’m running QGIS 3.36.3 on Mac OS Ventura 13.6.7 Intel. My version of QGIS 
has informed me there is an update for QGIS to version 3.38. I have downloaded 
the “new” update several times over the past day or so and on each installation 
it installs as QGIS 3.36.3


Hi Andrew,
unfortunately the .dmg macOS installers for both QGIS 3.38.0 and QGIS 
3.34.8 are currently not yet available due to the lack of new 
certificates to sign them with [1], while the QGIS Website and QGIS 
Desktop incorrectly advertise them even for macOS users.


The issue has been already reported to the qgis.developer mailing list 
[2] and to the GitHub repository of the QGIS Website [3].


A pull request has been already submitted [4], but not yet applied, in 
order to make the QGIS Website actually advertise the currently 
available QGIS version 3.36.3 and 3.34.7 for macOS users.


You will find the QGIS 3.38.0 .dmg installer 
(qgis_pr_final-3_38_0_*.dmg) for macOS at [5] when available.


Consider that you can currently install QGIS 3.38.0 on macOS
using MacPorts [6].

Regards.

Andrea



[1] https://x.com/JuergenEFischer/status/1806314913721155716
[2] https://lists.osgeo.org/pipermail/qgis-developer/2024-June/066897.html
[3] https://github.com/qgis/QGIS-Website/issues/1258
[4] https://github.com/qgis/QGIS-Website/pull/1259
[5] https://download.qgis.org/downloads/macos/pr/?C=M;O=D
[6] https://qgis.org/en/site/forusers/alldownloads.html#macports
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Re: [Qgis-user] Export to PostgreSQL in Model Designer

2024-06-27 Thread Andrea Giudiceandrea via QGIS-User

Christoph Jung jagodki.cj at gmail.com
Thu Jun 27 05:56:08 PDT 2024



I want expand a model to export the model output directly to a specific table 
in a postgresql database.


Hi Christoph,
it would be useful if you specified the exact version of QGIS you are using.

It looks like you are experiencing an issue already recently reported 
[1] and fixed [2][3][4].
The fix is available in QGIS 3.39.0-Master built after commit a955ea3 
and will be available since QGIS 3.38.1 and QGIS LTR 3.34.10.


Regards.

Andrea

[1] https://github.com/qgis/QGIS/issues/57842
[2] https://github.com/qgis/QGIS/pull/57901
[3] https://github.com/qgis/QGIS/pull/57906
[4] https://github.com/qgis/QGIS/pull/57905
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Re: [Qgis-user] problem when opening projects in open instance

2024-06-21 Thread Andrea Giudiceandrea via QGIS-User

Il 21/06/2024 09:34, Simon Dietmann ha scritto:

I updated QGIS in the meantime from 3.34.6 to 3.34.7-2, the problem occurred in 
both versions.


I'm not sure I understood correctly.
Did the issue always occur using QGIS 3.34.6 or didn't it occur using 
QGIS 3.34.6 until some weeks ago and then started to occur still using 
QGIS 3.34.6 without any QGIS update?


It would be interesting to understand if the starting of the occurrence 
of the issue was triggered by a QGIS update or not.


The similar issue described in the previous thread in this mailing list 
and in the report already referenced was triggered by an update in the 
libzip library used by QGIS and installed by the OSGeo4W installers: the 
issue started to occur when libzip was updated from version 1.7.3 (in 
3.34.5-1 installer and previous ones) to version 1.10.1 (in 3.34.6-1 e 
3.34.7-1 installers).
Such issue was allegedly fixed in 3.34.7-2 installer just downgrading 
libzip  to version 1.7.3.


Regards.

Andrea
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Re: [Qgis-user] problem when opening projects in open instance

2024-06-20 Thread Andrea Giudiceandrea via QGIS-User

Simon Dietmann dietmann at pgnu.de
Thu Jun 20 01:29:57 PDT 2024
since several weeks I can´t open existing .qgz files from inside an open QGIS instance 
when they are located on a network drive. The error message that appears is "Unable 
to unzip file: ..."


Hi Simon,
you wrote that the issue occurs "since several weeks": did you use the 
very same QGIS 3.34.7 version even before several weeks ago when the 
issue didn't occur?


Have the Operative System been updated?

Which installer did you use to install QGIS, the OSGeo4W network 
installer osgeo4w-setup.exe or the OSGeo4W stand-alone all-in-one 
installer QGIS-OSGeo4W-3.34.7-2.msi or another one?


Have you tried if the issue occurs also using a new QGIS user profile?

Please read the previous thread in this mailing list about a similar 
issue 
https://www.mail-archive.com/qgis-user@lists.osgeo.org/msg53698.html and 
the previous issue report about a similar issue  on GitHub 
https://github.com/qgis/QGIS/issues/57535


Regards.

Andrea
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Re: [Qgis-user] QDRAW QGIS 3.34 not loading

2024-06-07 Thread Andrea Giudiceandrea via QGIS-User

Preuß, Sylvia Sylvia.Preuss at obk.de
Thu Jun 6 23:34:19 PDT 2024




I have recently installed GQIS 3.34.6
Now I can't load QDRAW anymore. Can anyone help?


Hi Sylvia,
it's a plugin's issue and should be fixed by the plugin's author(s).
See https://github.com/jeremyk6/qdraw/issues/19 for a workaround.

Best regards.

Andrea
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Re: [Qgis-user] QGIS 3.34 and QGZ on network drives

2024-05-03 Thread Andrea Giudiceandrea via QGIS-User

Thomas Schüttenberg thomas at qgis.de
Fri May 3 01:47:25 PDT 2024


The only other or older libzip version available in osgeo4w is v1.7.3. 
Exchanging the current bin/zipp.dll (libzip v1.10.1) from the QGIS 3.34.6 install with a zip.dll of a QGIS 3.34.5 install (or older), which should be v1.7.3, does solve the problem (for now). - So the problem lies within the libzip 1.10.1 version.

But the upstream issue remains and will re-occur in upcoming QGIS releases. So 
far I have no idea on how to support the fixing (apart from contributing to 
#382).



Hi Thomas,
glad I was of help. I think it would be useful if you could report such 
issue to the OSGeo4W team opening a new ticket at 
https://trac.osgeo.org/osgeo4w/ and describing the issue and the 
workaround and also pointing to this thread.


Best regards.

Andrea
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Re: [Qgis-user] QGIS 3.34 and QGZ on network drives

2024-05-02 Thread Andrea Giudiceandrea via QGIS-User

Thomas Schüttenberg thomas at qgis.de
Thu May 2 07:12:35 PDT 2024
All findings described below refer to QGIS 3.34.6. 
I am affraid it is connected to the extensive updates liste here https://lists.osgeo.org/pipermail/qgis-user/2024-April/054334.html ?



Thu May 2 05:44:11 PDT 2024
"Unable to unzip file ''" is displayed and the 
project does not open.




Hi Thomas,
AFAIK the error message is displayed when the zip_open function of the 
libzip library, used by QGIS, fails to open the .qgz project file.

Are there other related error messages in the Log Messages panel?

Since you think the issue may be related to the recent OSGeo4W packages 
update, have you tried to downgrade the libzip library using the OSGeo4W 
Setup program to the previous version?


Best regards.

Andrea
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Re: [Qgis-user] A load of updates in OSGeo4W

2024-04-15 Thread Andrea Giudiceandrea via QGIS-User

Alister Hood alister.hood at gmail.com
Mon Apr 15 21:10:37 PDT 2024



Also, be prepared to wait - it took a long time here to download the
updates.


Hi Alister,
the download speed depends also on the download site chosen: try using a 
different download site.


Best regards.

Andrea
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Re: [Qgis-user] Python console sys.stdout.encoding

2024-04-08 Thread Andrea Giudiceandrea via QGIS-User

Why with the python shell it is possible to ask what is the value of 
sys.stdout.encoding but this value does not exist in the python console of Qgis 
?


Hi Pierre,
I think it's very likely due to:

https://github.com/qgis/QGIS/blob/35aadbc18a2245fce299a3597137c8d9b7f048b0/python/console/console_output.py#L139

sys.stdout = writeOut(self, sys.stdout)

In the Python console, sys.stdout is a 'console.console_output.writeOut'> object which doesn't have an 
"encoding" attribute.


Best regards.

Andrea
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Re: [Qgis-user] Installing gdal-mrsid with osgeo4w-setup.exe command fails

2024-04-02 Thread Andrea Giudiceandrea via QGIS-User

Richard McDonnell richard.mcdonnell at opw.ie
Tue Apr 2 03:42:52 PDT 2024



You will need to manually install these, in the setup app, by using the 
Advanced install and under Select Packages, Libs select dgal-mrsid.


Hi Richard,
it looks like the issue occurs using the command line installation, 
while it doesn't occur using the installer GUI.



Simon Gröchenig groechenig at zt-gis.at
Fri Mar 29 00:09:33 PDT 2024



While QGIS is installed fine, gdal-mrsid is silently failing (cannot load 
sid-files in QGIS). The problem occurs since upgrading to QGIS 3.36.


Hi Simon,
I suggest you to ask to the osgeo4w-dev mailing list 
https://lists.osgeo.org/mailman/listinfo/osgeo4w-dev or to file a ticket 
to https://trac.osgeo.org/osgeo4w/


Best regards.

Andrea

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Re: [Qgis-user] Plugin Problem

2024-03-22 Thread Andrea Giudiceandrea via QGIS-User

Zoltán Siki siki1958 at gmail.com
Fri Mar 22 01:23:13 PDT 2024



OTB  has to be installed manually and you have to enable OrfeoToolbox
provider plugin.


Hi Zoltán,
the OTB Processing provider plugin has been removed from QGIS core since 
QGIS 3.36.0.


See, for reference:
- https://lists.osgeo.org/pipermail/qgis-developer/2023-November/066221.html
- https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2365
- https://github.com/qgis/QGIS/pull/55406
- 
https://qgis.org/it/site/forusers/visualchangelog336/index.html#feature-otb-processing-provider-removed

- https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2382

The Orfeo ToolBox developers are taking care of the development of an 
external third-party OTB Processing provider plugin for QGIS >= 3.36 
which will be published in the QGIS official plugin repository very soon.


See, for reference:
- https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2379
- https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/merge_requests/1011
- 
https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2382#note_109902

- https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb-qgis-plugin
- 
https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb-qgis-plugin/-/jobs/84200/artifacts/file/orfeoToolbox_provider.3.0.0.zip


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Plugin Problem

2024-03-21 Thread Andrea Giudiceandrea via QGIS-User

Kalbinur Deniz kalbinurlab at gmail.com
Thu Mar 21 16:10:59 PDT 2024



the Orfeo Toolbox (OTB) I need to use is not included in the QGIS 3.36.0
version. I've been trying to solve this problem for a long time, but it
doesn't work. I need your help as soon as possible.


Hi Kalbinur,
just use QGIS 3.34.

Best regards.

Andrea
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Re: [Qgis-user] QGIS unknown developer on Macs

2024-03-21 Thread Andrea Giudiceandrea via QGIS-User

Peter Gloor gloor at att.net
Thu Mar 21 06:13:34 PDT 2024



I downloaded QIS-LTR Version QGIS 3.34.4-Prizren (), onto a MacBook Pro running OS 14.4 
and got this message:  "QIS-LTR was blocked from use because it is not from an 
identified developer"


Hi Peter,
where did you download the QGIS installer for macOS?
If you downloaded it form 
https://qgis.org/en/site/forusers/download.html#mac ,  did you read the 
instructions written in bold just above the download button?


"After installing QGIS, the first launch attempt may fail due to 
security protections. To enable QGIS, control-click on its icon in your 
Applications folder and select Open in the context menu. A confirmation 
dialog will display where you need to click the Open button again. This 
only has to be done once."


Are such instructions of any help for you?

Best regards.

Andrea
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Re: [Qgis-user] Warning and errors netcdf when running a command

2024-03-15 Thread Andrea Giudiceandrea via QGIS-User

Langers, Fransje fransje.langers at wur.nl
Fri Mar 15 01:05:24 PDT 2024



This was indeed the situation. Thanks for solving my problem!


You are welcome. I suggest you to also ensure that the "Default output
vector layer extension" is set to the value "gpkg" (GeoPackage), since I 
guess it is probably also incorrectly set to the "xtf" value which will 
also lead to issues with the GDAL processing algorithms having vector 
layer as output.


Since I suppose you have not intentionally set such options (like many 
other users experiencing similar issues), it would be very useful if you 
could remember what have you done after the last time the algorithm 
worked without issues and the first time it didn't work: have you 
upgraded / downgraded QGIS, or installed / uninstalled any plugin or 
used an older version and a newer version of QGIS with the same QGIS 
user profile, or...?


Every detail would help to find the root cause of the issue and try to 
permanently fix it.


Best regards.

Andrea
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Re: [Qgis-user] Warning and errors netcdf when running a command

2024-03-14 Thread Andrea Giudiceandrea via QGIS-User

Langers, Fransje fransje.langers at wur.nl
Thu Mar 14 23:01:45 PDT 2024
ERROR 1: 
C:/Users/#/AppData/Local/Temp/processing_DbfCYS/1a30206c31d84010bc9572e8adfb0139/OUTPUT.nc,
 band 1: IReadBlock failed at X offset 0, Y offset 0: netCDF chunk fetch 
failed: #-39 (NetCDF: Operation not allowed in define mode)


Hi Fransje,
it looks like the issue is very likely due to the fact that the "Default 
output raster layer extension" (in 
Settings->Options->Processing->General) has been set to the value "nc" 
(i.e. "netCDF" format").
May you check? If it is the case, have you set such option for a reason 
or haven't you set it? If the latter, the you can fix the issue just 
setting the "Default output raster layer extension" to the "tif" (i.e. 
GeoTIFF) value, which is the default value for such option.


Best regards.

Andrea
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Re: [Qgis-user] Problem with contour algorithm

2024-03-14 Thread Andrea Giudiceandrea via QGIS-User

Grant Boxer boxerg at iinet.net.au
Tue Mar 12 20:37:33 PDT 2024



I am trying to contour a grid file using the QGIS raster > extract>contour
and I get getting errors saying "Warning 1: Model file not specified" or
"ERROR 4: No such file or directory".


Hi Grant,
in order to fix the issue, you just need to change the "Default output 
vector layer extension" (in Settings->Options->Processing->General) for 
your QGIS user settings to a value other than "xtf": I suggest the value 
"gpkg" (GeoPackage) which is the default for such option.


I also suggest you to also change the "Default output raster layer 
extension" to "tif", which probably may be also incorrectly set to "nc" 
in your QGIS user settings.


Best regards.

Andrea
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Re: [Qgis-user] QGIS and FileGDB

2024-03-09 Thread Andrea Giudiceandrea via QGIS-User

Totò Fiandaca pigrecoinfinito at gmail.com
Tue Mar 5 00:15:20 PST 2024



I noticed that by modifying
the FileGDBs created by ArcGIS PRO in QGIS:
1. saving is particularly slow;
2. I often lose data, i.e. if I have an active data selection and I try to
update only the selection, QGIS updates the entire dataset resulting in
data loss.


Hi Totò,
as you already know, QGIS handles ESRI File Geodatabase layer via the 
GDAL/OGR library.
The GDAL/OGR library has two different drivers for the ESRI File 
Geodatabase forma: the built-int driver "OpenFileGDB" [1] (which is 
available on all systems) and the "FileGDB" driver (available on Windows 
through OSGeo4W) which depends on the ESRI FileGDB API SDK [2].

Using which driver does the issue occurs?

How do you update the data?

I think you should inform the GDAL/OGR developers about the issue. Since 
you experience the issue often, it shouldn't be so difficult to provide 
a sample ESRI File Geodatabase layer and exact steps in order to 
replicate the issue.


Best regards.

Andrea Giudiceandrea


[1] https://gdal.org/drivers/vector/openfilegdb.html
[2] https://gdal.org/drivers/vector/filegdb.html
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Re: [Qgis-user] How to control image exporter size (with QSize)

2024-02-25 Thread Andrea Giudiceandrea via QGIS-User

afernandez afernandez at odyhpc.com
Sun Feb 25 07:48:51 PST 2024


I'm using the image exporter to create PNG files. Everything looks good but 
the files must have a resolution of 1,200 pixels in the horizontal 
direction. 


The created file has a resolution of 3507 by 2480 pixels (not sure where 
these figures come from but QGIS seems to always use them).


Hi afernandez,
I guess your layout is an A4 page (H 29.7 cm * W 21 cm) and that the 
export resolution for the print layout is set to 300 dpi (the default 
value). This explains way the exported image has dimension of H 3507 px 
* W 2480 px and it's resolution is 300 dpi:

3507 px = 29.7 cm * 300 dpi * 1 in / 2.54 cm



canvas_settings.dpi = 100
The new file has a resolution of 1169x826 pixels


1169 px = 29.7 cm * 100 dpi * 1 in / 2.54 cm

You need to set the resolution to the value of 102.63 dpi in order to 
obtain the H dimension of 1200 pixels:

102.63 dpi = 1200 px * 2.54 cm / 29.7 cm / 1 in
So you will obtain an image of 1200 px * 848 px


canvas_settings.imageSize = QSize(1200,750)
it just seems to ignore QSize and reverts back to a 3507x2480 resolution. 


You need to respect the aspect ration of the layout page dimensions:
H / W layout = 29.7 cm / 21 cm = about 1.4143
W image = 1200 px / 1.4143 = 848 px

thus
canvas_settings.imageSize = QSize(1200, 848)

Best regards.

Andrea
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Re: [Qgis-user] Orfeo Tool Box

2024-02-25 Thread Andrea Giudiceandrea via QGIS-User

boxerg at iinet.net.au boxerg at iinet.net.au
Sat Feb 24 04:35:28 PST 2024



Where has the Orfeo Toolbox gone? I believe it has gone from being a core
plug-in to a standard plug-in but I cannot find it in the plug-ins list.


Hi Grant,
the OTB core plugin is no longer shipped with QGIS 3.36, while it is 
still shipped with QGIS LTR 3.34.

An OTB external 3rd-party plugin is not yet available for QGIS 3.36.

Please see:

https://lists.osgeo.org/pipermail/qgis-developer/2023-November/066221.html
https://github.com/qgis/QGIS/pull/55406
https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2365
https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/-/issues/2379

Best regards.

Andrea
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Re: [Qgis-user] How to create 3d terrain from DEM?

2024-02-23 Thread Andrea Giudiceandrea via QGIS-User

greg at tekknow.net greg at tekknow.net
Thu Feb 22 20:12:38 PST 2024


Hi Greg,
while I'm not sure that the IDW interpolation is the right interpolation 
algorithm to use in order to obtain a valid DEM from irregularly sampled 
elevation data and that Google Earth is a valid source of elevation data 
at sufficient resolution and precision for a house building, it looks 
like the main issue is due to the fact that the point vector layer 
containing the elevation data is in a geographical Coordinate Reference 
System, i.e. the unit of measure of the X and Y coordinates is the 
degree, while the unit of measure of the Z coordinate (elevation) is 
probably the metre.


Thus, in order for the the 3D terrain to be correctly displayed, you 
firstly need to reproject the point vector layer containing the 
elevation data to a projected Coordinate Reference System whose unit of 
measure for the X and Y coordinates is the metre and then use such 
reprojected point vector layer to create the DEM.

I suggest you to use an UTM projection suitable for your area.

Best regards.

Andrea
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Re: [Qgis-user] QGIS unable to access Spatialite tables.

2024-02-22 Thread Andrea Giudiceandrea via QGIS-User

Brent Wood Brent.Wood at niwa.co.nz
Thu Feb 22 17:54:46 PST 2024



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?


Hi Brent Wood,
I think it would help to find the cause of the issue and it's solution 
if you reported the full error message (and any other error message 
logged in the "Log Messages" panel) and described how exactly you import 
the layer in the QGIS project (and possibly also provided a sample layer 
file affected by the issue).


Best regards.

Andrea
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Re: [Qgis-user] Precise area calculation with CRS 4326 (+ formula)

2024-02-20 Thread Andrea Giudiceandrea via QGIS-User

Gabor Szakacs gabor.szakacs at agreena.com
Tue Feb 20 08:53:02 PST 2024



this is the method we are using in our programming pipeline...
https://pyproj4.github.io/pyproj/dev/_modules/pyproj/geod.html#Geod.polygon_area_perimeter


Since you are using the pyproj Geod.polygon_area_perimeter  then you are 
performing a geodesic calculation via PROJ -> geographiclib on the 
chosen ellipsoid.


Best regards.

Andrea
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Re: [Qgis-user] Precise area calculation with CRS 4326 (+ formula)

2024-02-20 Thread Andrea Giudiceandrea via QGIS-User

Gabor Szakacs gabor.szakacs at agreena.com
Tue Feb 20 03:58:40 PST 2024



1) is CRS 4326 suitable to make precise area calculations of agriculture
field boundaries that vary from 2 to 100ha for the 2nd decimal of a 
hectare?.


> The avg area difference of the sum of all fields was in the 9th 
decimal of a hectare between area calculation with CRS 4326 and area 
calculation with regional equal area CRS for each region.


Hi Gabor,
it depends on how you calculate the area: using geodesic calculation on 
the ellipsoid, or planimetric calculation. If you use geodesic 
calculation, the CRS doesn't matter: you will obtain the same value 
provided you are calculating the are on the same ellipsoid and obviously 
that the coordinates of the vertices of the polygons are the same on 
such ellipsoid.


> It seems that QGIS and Python use formulas that correctly convert
degrees into metric area calculation and minimize the effect of different
latitudes. Any kind of insights would be greatly appreciated.

Which expressions / formulas / methods have you used? Which version of 
QGIS have you used?


AFAIK, geodesic area and length calculation on the ellipsoid are 
performed in QGIS, since version 3.20, using the PROJ library which in 
turns uses, like PostGIS, the routines coded in the geographiclib library.


For reference, see:

- Use the GeographicLib routines exposed through PROJ for all 
ellipsoidal calculations https://github.com/qgis/QGIS/pull/41726


- C. F. F. Karney, Algorithms for geodesics, J. Geodesy 87(1), 43–55 
(Jan. 2013) https://doi.org/10.1007/s00190-012-0578-z

- Errata / Addenda https://geographiclib.sourceforge.io/geod-addenda.html

- GeographicLib::PolygonAreaT< GeodType > Class 
https://geographiclib.sourceforge.io/C++/doc/classGeographicLib_1_1PolygonAreaT.html



Best regards.

Andrea
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Re: [Qgis-user] Print Layout Objects don't act as Barriers

2024-02-12 Thread Andrea Giudiceandrea via QGIS-User

Stefan Giese (WhereGroup) stefan.giese at wheregroup.com
Mon Feb 12 02:57:55 PST 2024



goto Label properties in the main properties of your layout
and there check the "Label Blocking Items"


Hii Stefan,
while that functionality is very useful in most cases, it looks like it 
is not useful in this particular case.

Maybe such functionality needs to be improved.

https://jumpshare.com/s/M67HKicBQrVNYtYrzPMv

Best regards.

Andrea
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Re: [Qgis-user] Creating Wedge buffers automatically

2024-02-09 Thread Andrea Giudiceandrea via QGIS-User

krishna Ayyala ayyalakrishna at gmail.com
Fri Feb 9 16:26:48 PST 2024
I saw the "Create wedge buffers tool"
in QGIS but that does not work for me. The reason is; in that tool we have
to manually enter the azimuth, wedge width and radius. Is there a tool that
can automatically recognize the azimuth and radius (Dist) and create wedge
buffers as shown below.


Hi krishna Ayyala,
if all the needed data values are stored in the attributes of each 
feature, then you can use the "data defined override" functionality 
described in the QGIS user manual at 
https://docs.qgis.org/3.34/en/docs/user_manual/introduction/general_tools.html#data-defined-override-setup


Best regards.

Andrea
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Re: [Qgis-user] QNEAT3 plugin - contact information

2024-02-02 Thread Andrea Giudiceandrea via QGIS-User

Antonio Valanzano anvalanz at gmail.com
Fri Feb 2 04:57:05 PST 2024



Does someone know how to contact *Clemens Raffler* the developer og QNEAT3
plugin ?


Hi Antonio,
have you tried to contact Clemens Raffler without success (how have you 
tried?) or you don't know how to contact him?


If the latter, then a web search gives some hints:

- https://github.com/root676/QNEAT3
- https://github.com/root676/QNEAT3/blob/master/metadata.txt
- https://twitter.com/root676
- https://www.linkedin.com/in/clemens-raffler-335085130
- https://tbwresearch.org/en/staff-member/clemens-raffler/

Best regards.

Andrea
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Re: [Qgis-user] Does anyone know about this error?

2024-02-02 Thread Andrea Giudiceandrea via QGIS-User

João Victor Martinelli j203018 at dac.unicamp.br
Thu Feb 1 12:17:25 PST 2024



I'm trying to do supervised classification of a CBERS4-A image, using the
SCP plugin, but the following error has occurred


Hi João Victor,
I suggest you to follow the plugin's user manual instruction [1] in 
order to report the issue to the plugin author.


Best regards.

Andrea

[1] 
https://semiautomaticclassificationmanual.readthedocs.io/en/latest/faq.html#errors

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Re: [Qgis-user] Decoration Grid / drawing tools

2024-01-31 Thread Andrea Giudiceandrea via QGIS-User

Patrick Dunford enzedrailmaps at gmail.com
Wed Jan 31 00:13:52 PST 2024


Oh OK. Well I had no idea those capabilities had been added in Qgis, 


Hi Patrick,
AFAIK such functionalities have been introduced in QGIS since version 
2.8 (2014) by Denis Rouzaud.


For reference, see:
- https://github.com/qgis/QGIS/pull/1624
- https://github.com/qgis/QGIS-Enhancement-Proposals/pull/8

Best regards.

Andrea
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Re: [Qgis-user] Decoration Grid / drawing tools

2024-01-30 Thread Andrea Giudiceandrea via QGIS-User

Patrick Dunford enzedrailmaps at gmail.com
Tue Jan 30 01:56:23 PST 2024


So the best I can work out of how to digitise this shape is being able 
to align to the grid in some way perhaps with some kind of snapping to 
the grid or alignment to the grid or being able to see the angles on 
each corner or whatever. I am not sure how to achieve that at the moment.


Hi Patrick,
have you tried to use, as already adviced, the Advanced Digitizing tools 
[1]?


You can find online various tutorials: see e.g. one at random [2].

Best regards.

Andrea

[1] 
https://docs.qgis.org/3.34/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#the-advanced-digitizing-panel
[2] 
https://www.geodose.com/2022/08/qgis-tips-tricks-how-digitize-perfect-building-footprint.html

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Re: [Qgis-user] QGIS Browser Add relationship to Geopackage Error

2024-01-30 Thread Andrea Giudiceandrea via QGIS-User

Klaus Mithöfer mithoefer at gbd-consult.de
Tue Jan 30 04:38:37 PST 2024


I use QGIS 3.34.3 (Windows) with gdal 3.8.3. 
So it should work.


Hi Klaus,
I suggest you to create a new issue report on 
https://github.com/qgis/QGIS/issues providing alla the requested info 
and possibly also a sample layer and exact steps with which the issue 
occurs in order for a developer to replicate the issue and find its root 
cause and fix it if needed.


Best regards.

Andrea
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Re: [Qgis-user] QGIS Browser Add relationship to Geopackage Error

2024-01-30 Thread Andrea Giudiceandrea via QGIS-User

Hi Klaus,
what is the GDAL version used by QGIS on your system?
According to [1] the GDAL versions that support relationship editing and 
creation capabilities in browser are:


- ESRI FileGeodatabases on GDAL 3.6+
- GeoPackage and sqlite databases on GDAL 3.7+

Best regards.

Andrea

[1] https://github.com/qgis/QGIS/pull/51432
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Re: [Qgis-user] Decoration Grid / drawing tools

2024-01-28 Thread Andrea Giudiceandrea via QGIS-User

Patrick Dunford enzedrailmaps at gmail.com
Sun Jan 28 13:45:24 PST 2024


I note there is a canvas grid that can be turned on by going to View -> 
Decorations -> Grid. However the rotation of this appears to be fixed to 
north/south/east/west 


Hi Patrick,
the grid is a coordinates grid in the map's coordinate reference system, 
so it is obviously always north-south/east-west oriented (acually, X/Y 
oriented in the map CRS's Cartesian plane) based on the map's coordinate 
reference system north-south/east-west directions (actually, X/Y 
directions in the map CRS's Cartesian plane).


and does not appear to have any provision to be 
changed in rotation in any form, such as for example aligning to the 
four sides of the window.


May you please elaborate? Since the grid is a coordinates grid in the 
map's coordinate reference system and normally the axes directions of 
the map are aligned to the four sides of the map window, then the grid 
should always be aligned to the four side of the map window, unless you 
have set a rotation angle for the map and thus both the map and the grid 
are rotated and the axes directions of both the map and the grid are no 
more aligned with the four side of the map window.


Second issue is drawing tools. When I am tracing building outlines I 
want to be able to draw exact right angles with the sides of the 
building,


You can use the Advanced Digitizing panel, provided your map's CRS is a 
projected CRS.


Best regards.

Andrea
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Re: [Qgis-user] Should my QGIS 2 Plugins be removed from plugins.qgis.org?

2024-01-26 Thread Andrea Giudiceandrea via QGIS-User

Greg Troxel gdt at lexort.com
Fri Jan 26 07:21:47 PST 2024



It will be interesting to see if anyone says they are using qgis 2.


Looking at the number of plugins downloads, it seems there are still 
users using QGIS 2. For example, today the number of downloads of the 
"Shape Tools" plugin version 0.7.12 for QGIS 2 is 14736 [1], while it 
was 14168 one years ago [2]


Best regards.

Andrea


[1] https://plugins.qgis.org/plugins/shapetools/#plugin-versions
[2] 
https://web.archive.org/web/20230212152411/https://plugins.qgis.org/plugins/shapetools/#plugin-versions

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Re: [Qgis-user] Should my QGIS 2 Plugins be removed from plugins.qgis.org?

2024-01-26 Thread Andrea Giudiceandrea via QGIS-User

Greg Troxel gdt at lexort.com
Fri Jan 26 07:21:47 PST 2024



Another question is if the plugin repo should simply remove all qgis 2
plugins en masse and desupport 2 entirely.


What about the plugins working with QGIS 2 that had not been ported to 
work with QGIS 3?


Andrea
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Re: [Qgis-user] Plugin available on repo but not in QGIS

2024-01-26 Thread Andrea Giudiceandrea via QGIS-User

Il 26/01/2024 10:19, Jérémy Garniaux ha scritto:

Great, thanks Andrea!

I've been reported that it's visible indeed now.

Thank you Richard and Julien for your help!


Hi Jérémy,
thanks to you for reporting the issue and thanks to Lova Andriarimalala 
for deploying the fix to the server.


Best regards.

Andrea
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Re: [Qgis-user] Plugin available on repo but not in QGIS

2024-01-25 Thread Andrea Giudiceandrea via QGIS-User
The version 2.2 ot the BADASS plugin is now listed in 
https://plugins.qgis.org/plugins/plugins.xml?qgis=3.34


Best regards.

Andrea
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Re: [Qgis-user] Plugin available on repo but not in QGIS

2024-01-25 Thread Andrea Giudiceandrea via QGIS-User

Richard Duivenvoorde rdmailings at duif.net
Thu Jan 25 06:14:22 PST 2024



while minimum version is 3.34.2 (note the .2 !)

I remember we had lengthy discussions about this.



Hi Richard,
AFAIK after the merging of https://github.com/qgis/QGIS-Django/pull/325 
the issue should have been fixed.


I've added a comment to such PR linking this thread.

Best regards.

Andrea
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Re: [Qgis-user] Raster Merge issue

2024-01-23 Thread Andrea Giudiceandrea via QGIS-User

Hi Irene, you are welcome.

Best regards.

Andrea


Il 23/01/2024 16:48, Irene McGoldrick ha scritto:
Thank you so much for responding to my issue. You were correct and it 
was defaulting to .nc - I changed that to .tif and it completely 
resolved the issue.


I’ll have a go at sorting out the remotior_sensus in a little while.

I really appreciate you taking the time to respond to my issue and 
linking the info I need.

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Re: [Qgis-user] Hillshade default direction

2024-01-23 Thread Andrea Giudiceandrea via QGIS-User

David Strip qgis-user at stripfamily.net
Mon Jan 22 21:39:32 PST 2024



See also:

- 
https://gis.stackexchange.com/questions/283546/hillshading-makes-crater-like-depressions-look-elevated/283635#283635


- 
https://pro.arcgis.com/en/pro-app/latest/tool-reference/3d-analyst/how-hillshade-works.htm


- https://sci-hub.hkvisa.net/10.1126/science.194.4263.374


Best regards

Andrea
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Re: [Qgis-user] Raster Merge issue

2024-01-23 Thread Andrea Giudiceandrea via QGIS-User

Irene McGoldrick muinteoirirenesnb at gmail.com
Tue Jan 23 00:25:45 PST 2024



gdal_merge.py -ot Float32 -of GMT -o
/private/var/folders/bk/m4zg7bwx7f771yq8hqsrddnrgn/T/processing_FDCMWO/f9a7599de3314675b6c81c21ebcb91bb/OUTPUT.nc



Please select a format that does, such as GTiff (the default) or HFA (Erdas
Imagine).


Hi Irene,
it looks like .nc format has been set as the raster format, for the 
temporary output layer, in the QGIS user profile that you are using.


As advised in the very error message, you should fix the issue just 
setting the tif (GTiff) format (which is the default setting) in 
Settings -> Options -> Processing -> General -> Default output raster 
layer extension.




Not sure if they are related or not. I have uninstalled and re-installed
the Semi Automatic Classification Plugin. I'm working off Mac OS. I have
tried searching remotior_sensus in the user manual but I'm not getting
anything back for it.



AFIAK, the issues are not related. The steps needed to install / update 
the required dependencies, including the remotior-sensus Python package, 
are described in the plugin user manual at 
https://semiautomaticclassificationmanual.readthedocs.io/en/latest/installation_mac.html#installation-of-required-dependencies


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Help - Fix Geometries Required GEOS 3.10

2024-01-12 Thread Andrea Giudiceandrea via QGIS-User

Mars Sjoden marsofearth at gmail.com
Fri Jan 12 11:53:20 PST 2024



QGIS version: 3.28.14-Firenze
GEOS version: 3.9.1-CAPI-1.14.2



*Algorithm 'Fix geometries' starting…*



The structured method to make geometries valid requires a QGIS build based
on GEOS 3.10 or later


Hi Mars Sjoden,
as explained in the "Fix geometries" processing algorithm's help page 
[1], a QGIS version built with the GEOS library version 3.10 or later is 
required in order to use the "Structure" repair method.


Since your QGIS build uses a GEOS 3.9 version, you can obviously only 
use the "Linework" repair method. So you need to select the "Linework" 
method for the "Repair method" parameter in the processing algorithm 
dialog window.


Alternatively, you can install and use a QGIS version build with a more 
recent GEOS version as instructed in the Download page of the QGIS 
website [2][3].
This way you can use both the "Linework" and the "Structure" repair 
methods with the "Fix geometries" processing algorithm.


Best regards.

Andrea


[1] 
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#fix-geometries

[2] https://qgis.org/en/site/forusers/download.html#mac
[3] https://qgis.org/en/site/forusers/alldownloads.html#macports
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Re: [Qgis-user] Amal Kar - India - Batch conversion of files for raster layer format from geotiff to idrisi, and simultaneously from a higher pixel resolution to a lower one.

2024-01-11 Thread Andrea Giudiceandrea via QGIS-User

Il 11/01/2024 16:53, Amal Kar ha scritto:

Dear Drs. Richard McDonnell and Andrea Giudiceandrea,


However, i now find a small difference between the batch processing 
through the"Wrap" tool and the processing of individual files.


When i convert the files individually, the files get converted from 
32-bit to 16-bit automatically, without asking, but under the Batch 
Processing through Wrap the 32-bit data is retained.


Hi Amal,
the "Warp (Reproject)" processing algorithm allows you to set the output 
data type specifying it in the "Output data type" advanced parameter. 
Have you properly set it with the desired output data type?
Please refer to the algorithm help page already linked to find info 
about all the algorithm parameters.


In your initial message in this thread, you wrote that the "Translate 
(Convert Format)" processing algorithm converts the raster layers 
accurately except for the output resolution which you didn't know how to 
set, thus I suppose that with such algorithm the output data type is 
correct.
Have you set it or not in such algorithm? Have you tried to continue to 
use such algorithm and just add the -tr and -r additional parameters in 
the "Additional command-line parameters" algorithm parameter?


Best regards.

Andrea
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Re: [Qgis-user] Amal Kar - India - Batch conversion of files for raster layer format from geotiff to idrisi, and simultaneously from a higher pixel resolution to a lower one.

2024-01-11 Thread Andrea Giudiceandrea via QGIS-User

Amal Kar akarcaz50 at gmail.com
Thu Jan 11 00:16:21 PST 2024



I am using the batch convert utility in my QGIS (ver. 3.18; Zurich) within
the GDAL Toolbox, especially its "Translate (Convert Format)" utility under
"Raster Conversion".
While this utility converts all the files from .tif to .rst & .rdc very
quickly and accurately, it does not have any scope of changing the pixel
resolution


Hi Amal Kar,
the "Translate (Convert Format)" GDAL processing algorithm is based on 
the GDAL "gdal_translate" utility [1] as stated in the algorithm help 
page [2].


The "gdal_translate" utility has various parameter to set the output 
resolution [3] and the resampling method [4].


The "Translate (Convert Format)" algorithm exposes in the GUI only a 
subset of the "gdal_translate" utility parameters.
Anyway you could provide additional parameters using the "Additional 
command-line parameters" algorithm parameter.


Another way could be to use the "Warp (reproject)" GDAL processing 
algorithm [5] which is based on the GDAL "gdalwarp" utility and which 
exposes in the GUI the both the output resolution and the resampling 
method parameters.


Best regards.

Andrea


[1] https://gdal.org/programs/gdal_translate.html
[2] 
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/gdal/rasterconversion.html#translate-convert-format
[3] 
https://gdal.org/programs/gdal_translate.html#cmdoption-gdal_translate-tr

[4] https://gdal.org/programs/gdal_translate.html#cmdoption-gdal_translate-r
[5] 
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/gdal/rasterprojections.html#warp-reproject

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Re: [Qgis-user] Help

2024-01-11 Thread Andrea Giudiceandrea via QGIS-User

Oisin Canney oisin.canney at greenloaning.com.au
Wed Jan 10 20:36:37 PST 2024



Please refer to the word document as to what I'm having trouble with, I just 
want to separate the PCT layer into their own separate polygons.


Hi Oisin Canney,
it would be useful to describe the issue directly in the body of the 
message.


Best regards.

Andrea
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Re: [Qgis-user] QGIS: csv export of decimal data without quotation marks

2024-01-11 Thread Andrea Giudiceandrea via QGIS-User

Matti Bartels bartels at capsa-building.org
Wed Jan 10 20:30:07 PST 2024



I’ve opened a ticket for this regression in GitHub.


Hi Matti,
thank you for creating an issue report in the GitHub repository [1]. The 
root cause of the issue has been already found by Even Rouault in the 
GDAL/OGR library and a patch for such library has been promptly 
submitted [2] in order to fix the regression (affecting QGIS version 
using GDAL/OGR 3.8.1 <= version <= 3.8.3).


Best regards.

Andrea

[1] https://github.com/qgis/QGIS/issues/55808
[2] https://github.com/OSGeo/gdal/pull/9048
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Re: [Qgis-user] plugin QPackage error: where to report the bug?

2024-01-10 Thread Andrea Giudiceandrea via QGIS-User

Agustin Lobo alobolistas at gmail.com
Wed Jan 10 11:02:52 PST 2024



I will report that to them as well.
Agus

On Wed, Jan 10, 2024 at 7:24 PM Alexander Bruy  
wrote:


Hi Agustin,

maybe here https://github.com/CREASIG/QPackage


Hi Agustin,
I think the actual plugin code repository for QGIS 3.x is 
https://github.com/CREASIG/QPackage3


Anyway, it looks like the author is not active on GitHub since the 2018.

If you provide the full erro message, it would be possible to find a way 
to fix the error.


Best regards.

Andrea
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Re: [Qgis-user] Create point vector file on Mac

2024-01-05 Thread Andrea Giudiceandrea via QGIS-User

JOE LEMONNIER jlemonnier at mac.com
Fri Jan 5 09:58:44 PST 2024


When I  create a new shapefile or a geopackage layer with Point as the geometry type, I get an error message “Error: Unknown vector layer type” The layer seems to work so I’m not that worried. 


Hi Joe,
it looks like the error message is very likely generated by an external 
QGIS plugin ("Bunting Labs AI Vectorizer") installed in the QGIS user 
profile you are using on the MacBookPro M2 system.


May you please try if the issue also occurs disabling such QGIS plugin 
or using a new QGIS user profile?


Best regards.

Andrea
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Re: [Qgis-user] Missing Raster Calculator in QGIS 3.34

2023-12-19 Thread Andrea Giudiceandrea via QGIS-User

Luigi Pirelli luipir at gmail.com
Mon Dec 18 15:39:19 PST 2023



intentionally I would say:


At 
https://github.com/qgis/QGIS-Enhancement-Proposals/issues/271#issuecomment-1775492835 
it is stated that:


>


Anyway, it looks like the toolbox processing algorithm's GUI doesn't 
work _exactly_ the same way as before, since the reported missing 
possibility to save and load custom expression and also the missing 
functionalities reported at [1] and [2].


Best regards.

Andrea

[1] https://github.com/qgis/QGIS/issues/55386
[2] https://github.com/qgis/QGIS/issues/55387
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Re: [Qgis-user] Missing Raster Calculator in QGIS 3.34

2023-12-18 Thread Andrea Giudiceandrea via QGIS-User

Lene Fischer lfi at ign.ku.dk
Mon Dec 18 05:08:14 PST 2023
I´m using QGIS 3.34
In processing>Raster Calculator I can´t find the same Raster Calculator as in 
3.32.
The dialog are totally changed - Can anyone tell me where to find it. In the 
raster calculator in 3.32 I can save function - but this has vanished.


Hi Lene,
I'd suggest you to open a new Issue report on 
https://github.com/qgis/QGIS/issues


Best regards.

Andrea
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Re: [Qgis-user] [extern] Re: Problem with Python/Qgis

2023-12-13 Thread Andrea Giudiceandrea via QGIS-User

Gaël Kermarrec kermarrec at meteo.uni-hannover.de
Tue Dec 12 23:38:24 PST 2023



Hi, this is a qgis python problem since I got such error for everything 
involving python with qgis. This was just an exemple. For sure I installed and 
reinstalled it :-). I hope that someone had the same pb


Hi Gaël,
have you tried if the issue occurs using a new QGIS user profile as 
previously recommended?
if it still occur also using a new QGIS user profile, then please 
provide the full error messages log, not only an example.


Best regards.

Andrea
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Re: [Qgis-user] [extern] Re: Problem with Python/Qgis

2023-12-12 Thread Andrea Giudiceandrea via QGIS-User

Gael Kermarrec kermarrec at meteo.uni-hannover.de
Tue Dec 12 16:52:37 PST 2023


Couldn't load plugin 'crayfish' due to an error when calling its 
initGui() method AttributeError: module 'pyqtgraph' has no attribute 
'GraphicsWindow' Traceback (most recent call last)


Hi Gael,
the error message is quite clear: it is caused by the external plugin 
"crayfish" you have installed in the QGIS user profile "default". The 
issue has been already reported [1].


Te easiest way to get rid of the error message is to uninstall such 
external plugin or to use a new QGIS user profile [2][3] or to start 
QGIS without any plugin enabled [3].


Best regards.

Andrea


[1] https://github.com/lutraconsulting/qgis-crayfish-plugin/issues/499
[2] 
https://docs.qgis.org/3.28/en/docs/user_manual/introduction/qgis_configuration.html#working-with-user-profiles
[3] 
https://docs.qgis.org/3.28/en/docs/user_manual/introduction/qgis_configuration.html#command-line-and-environment-variables

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Re: [Qgis-user] Models execution times very different between QGIS 3.34.0 and QGIS 3.32.3

2023-11-20 Thread Andrea Giudiceandrea via QGIS-User

Lorenzo-Outlook morettilorenzo at outlook.com



With the new version 3.34.0 it is impossible to run complex models!

Why this huge difference between the two versions?

Please check


Hi Lorenzo,
I suggest you to open an issue report on the QGIS GitHub repository at 
https://github.com/qgis/QGIS/issues providing the model and the input 
layer(s) and all the info requested in the issue report form.


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Reselect Features

2023-11-16 Thread Andrea Giudiceandrea via QGIS-User

Michael Edward McNeil memcneil02 at gmail.com
Thu Nov 16 16:04:37 PST 2023



Why doesn't the Edit > Select > Reselect Features command work?


Hi Michael,
it seems to me the command works as expected [1], at least using QGIS 
3.28 on Windows.


May you provide a detailed list of steps that lead to such command to 
not work properly?


Best regards.

Andrea

[1] 
https://docs.qgis.org/3.28/en/docs/user_manual/introduction/general_tools.html#selecting-manually-on-the-map-canvas

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Re: [Qgis-user] DataPlotly plugin (ubuntu) : ModuleNotFoundError: No module named 'pandas

2023-11-15 Thread Andrea Giudiceandrea via QGIS-User

Hi Laurent,
the error message should no longer show up using the latest available 
plugin version 4.1.0, thanks to Étienne Trimaille and Matteo Ghetta.


https://github.com/ghtmtt/DataPlotly/pull/332

Best regards.

Andrea
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Re: [Qgis-user] Mollweide coordinate reference systems not showing up in Mac version 3.28.12? Does show in Windows version 3.28.10

2023-11-14 Thread Andrea Giudiceandrea via QGIS-User

Diaz, Tony A. tonyd at caltech.edu



Hello, I had a student who was using QGIS (version 3.28.12 for Mac) and noticed 
that the coordinate reference systems were not matching what I had on my 
version of QGIS, which is 3.28.10 for Windows.


Hi Tony,
AFAIK the QGIS version installed by the dmg installer ships old GDAL/OGR 
and PROJ libraries, while the Windows installer ships newer ones. I 
think this may be the root cause of the issue.
Have you tried to install QGIS by MacPorts 
https://qgis.org/it/site/forusers/alldownloads.html#macports instead?


Best regards.

Andrea
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Re: [Qgis-user] Problem downloading QGIS 3.34 to macOS 12.7.1

2023-11-14 Thread Andrea Giudiceandrea via QGIS-User

Il 14/11/2023 09:51, Thomas Beauvais ha scritto:

Hi Andrea,

It works, thanks!



I'm glad to be of help.

Best regards.

Andrea
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Re: [Qgis-user] Problem downloading QGIS 3.34 to macOS 12.7.1

2023-11-13 Thread Andrea Giudiceandrea via QGIS-User

Thomas Beauvais thom.beauvais at orange.fr
Mon Nov 6 05:28:31 PST 2023
I am using QGIS 3.32 version and I want to download the 3.34 version on my Mac 
computer (macOS 12.7.1). I properly downloaded and loaded the installation 
package for Mac computers on the QGIS web page. Then I ran QGIS, but the 
software presented the 3.32 version.


Hi Thomas,
the QGIS 3.34.0 dmg installer for macOS is available now at 
https://qgis.org/en/site/forusers/download.html#mac


Best regards.

Andrea
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Re: [Qgis-user] Problem downloading QGIS 3.34 to macOS 12.7.1

2023-11-06 Thread Andrea Giudiceandrea via QGIS-User

Il 06/11/2023 22:35, Andrea Giudiceandrea ha scritto:

Hi Thomas,
unfortunately there is currently an issue with the QGIS 3.34.0 installer 
build which is actually not yet available although the macOS section in 
the download page in the QGIS website shows a misleading "Download QGIS 
3.34" link.


You will find the QGIS 3.34.0 .dmg installer at 
https://download.qgis.org/downloads/macos/pr/?C=M;O=D when available.


I forgot to mention that you can currently install QGIS 3.34.0 on macOS 
using MacPorts: https://qgis.org/en/site/forusers/alldownloads.html#macports


Best regards.

Andrea
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Re: [Qgis-user] Problem downloading QGIS 3.34 to macOS 12.7.1

2023-11-06 Thread Andrea Giudiceandrea via QGIS-User

Thomas Beauvais thom.beauvais at orange.fr
Mon Nov 6 05:28:31 PST 2023


I want to download the 3.34 version on my Mac computer (macOS 12.7.1). I properly downloaded and loaded the installation package for Mac computers on the QGIS web page. Then I ran QGIS, but the software presented the 3.32 version. 


Hi Thomas,
unfortunately there is currently an issue with the QGIS 3.34.0 installer 
build which is actually not yet available although the macOS section in 
the download page in the QGIS website shows a misleading "Download QGIS 
3.34" link.


You will find the QGIS 3.34.0 .dmg installer at 
https://download.qgis.org/downloads/macos/pr/?C=M;O=D when available.


Best regards.

Andrea
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Re: [Qgis-user] DataPlotly plugin (ubuntu) : ModuleNotFoundError: No module named 'pandas

2023-11-04 Thread Andrea Giudiceandrea via QGIS-User

celati Laurent laurent.celati at gmail.com



**ModuleNotFoundError: No module named 'pandas'**


Hi,
you obviously need to install the "pandas" Python module or the 
python3-pandas Ubuntu package.


Best regards.

Andrea
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Re: [Qgis-user] How to download QGIS for MacOs Ventura 13.5.2

2023-11-02 Thread Andrea Giudiceandrea via QGIS-User

Hi Garth,
do you think the instructions available on qgis.org are OK or should 
them be improved?



macOS High Sierra (10.13) or newer is required. QGIS is not yet 
notarized as required by macOS Catalina (10.15) security rules. On first 
launch, please control-click on the icon and choose Open from the 
context menu, after which a confirmation dialog is shown and you need to 
click the Open button.



Please have a look at https://github.com/qgis/QGIS-Website/issues/1195 
in which there is a proposal to modify the instructions on qgis.org.


Best regards.

Andrea
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Re: [Qgis-user] Semi Automictic Classification Plugin- Reg

2023-10-19 Thread Andrea Giudiceandrea via QGIS-User

Hi Rajesh,
the error message showed in the provided screenshot is about the 
qgis_gee_data_catalog (Google Earth Engine Data Catalog) plugin, not 
about the Semi-Automatic Classification plugin.


Best regards.

Andrea
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Re: [Qgis-user] Merge Selected Features crash

2023-10-06 Thread Andrea Giudiceandrea via QGIS-User

Richard Greenwood richard.greenwood at gmail.com
Thu Oct 5 07:48:59 PDT 2023



I created a bug report with a small sample gpkg.
https://github.com/qgis/QGIS/issues/54856


Thanks. A fix for such issue has been submitted: 
https://github.com/qgis/QGIS/pull/54862


Best regards.

Andrea
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Re: [Qgis-user] Merge Selected Features crash

2023-10-05 Thread Andrea Giudiceandrea via QGIS-User

Richard Greenwood richard.greenwood at gmail.com
Wed Oct 4 09:39:12 PDT 2023



I believe this is a bug but I'm posting here first in case I'm overlooking
something obvious. Merge Selected Features is causing QGIS 3.32.3 to crash
(close without showing errors). However the same operation on the same data
in 3.28.11 doesn't crash.


Hi Richard,
it seems to me it my be a bug, but it may be difficult to find the root 
cause without a sample layer / project and exact steps to replicate the 
issue.


It would be great if you could check if the issue does occur using a 
recent nightly build developer version of QGIS 3.33 and/or if you create 
an issue report on https://github.com/qgis/QGIS/issues providing the 
requested info.


Best regards.

Andrea
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Re: [Qgis-user] OGR error setting feature 35

2023-10-05 Thread Andrea Giudiceandrea via QGIS-User

Thayer Young thayeray at yahoo.com
Wed Oct 4 06:10:34 PDT 2023



I think that means that you neglected to fill in a value for a required field


Hi Thayer,
the error message explicitly says that "Coordinates with non-finite 
values are not allowed", so the issue is about a feature geometry having 
coordinates with non-finite values and not about missing value in a 
feature attribute.


Hi Neil,
I think it may be difficult to find the root cause of the issue without 
having a sample layer, a sample project and a minimum set of exact steps 
to replicate the issue.
I suggest you to file a new issue report at 
https://github.com/qgis/QGIS/issues


Best regards.

Andrea
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Re: [Qgis-user] azimuth offset 0.32 added to all drawn segments in Azimuth and Distance plugin

2023-09-26 Thread Andrea Giudiceandrea via QGIS-User

Jeremy Jackson jerj at coplanar.net
Mon Sep 25 06:28:31 PDT 2023



When working with git master branch, or 3.32.2, QGIS Azimuth and Distance 
plugin seems to add a constant offset to the azimuths entered.



If i use the measure bearing tool, i get around 0.32 degrees, and it seems to 
vary slightly each time i draw from a different starting point, but if I delete 
the drawn, point and snap to the same starting point, i get the same offset.


Hi Jeremy,
it looks like the issue is due to the fact that, while the "Azimuth and 
Distance" plugin always uses the planimetric azimuth/bearing and the 
planimetric distance (i.e. calculated on the Cartesian plane of the 
Project CRS), the Measure Bearing tool returns the bearing angle 
measured on the ellipsoid set for the current Project (in 
Project->Properties...->Measurements->Ellipsoid), instead.


If you set the Project ellipsoid to "None / Planimetric", than the 
Measure Bearing tool will return the planimetric bearing angle (i.e. 
measured on the Cartesian plane of the Project CRS).


You can also use the "Azimuth Measurement Map Tool" plugin which allow 
to switch between Cartesian and ellipsoidal measurement directly in the 
tool window.


Best regards.

Andrea
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Re: [Qgis-user] Installing QGIS on Linux Mint 21.2.1

2023-09-20 Thread Andrea Giudiceandrea via QGIS-User

[Qgis-user] Installing QGIS on Linux Mint 21.2.1
Bill Symington bill.symington at sbcglobal.net
Wed Sep 20 11:14:41 PDT 2023


I recently set up my computer Windows 10 computer as a dual boot machine 

with Windows 10 and Linux MInt 21.2

Under Windows 10 I have QGIS 3.28.8-Firenze. Under Linux I have QGIS 
3.22.4-Biatowieza.


Hi Bill,
it looks like you have installed QGIS from the Ubuntu repository (which 
offers QGIS 3.22.4) instead of the qgis.org repositories (which 
currently offer QGIS 3.28.11 LTR and QGIS 3.32.3).


If you want to install QGIS 3.28 LTR on you GNU/Linux Ubuntu/Debian 
based distribution, you need to correctly uninstall QGIS 3.22 and to 
follow the detailed instructions available at 
https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu and 
pay attention to use the repository URI https://qgis.org/debian-ltr and 
to use the correct Ubuntu distribution codename (which should be 
"jammy"): a note in the detailed instructions explains how.


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Error! No Internet connection? OSM Place Search plugin error

2023-09-13 Thread Andrea Giudiceandrea via QGIS-User

Keith Jenkins kgjenkins at gmail.com
Wed Sep 13 09:41:22 PDT 2023



In the ol-geocoder.js file that is created by qgis2web, search for:
"https://nominatim.openstreetmap.org/search/";


Hi Keith,
I've filed a Pull Request [1] to fix the issue in the qgis2web plugin.
I don't know if and when it will be merged and a new version of the 
plugin will be available (the plugin seems not constantly maintained).


Best regards.

Andrea

[1] https://github.com/tomchadwin/qgis2web/pull/1038
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Re: [Qgis-user] Error! No Internet connection? OSM Place Search plugin error

2023-09-13 Thread Andrea Giudiceandrea via QGIS-User

Hi Jared,
I can confirm what Frank wrote: the "OSM place search" QGIS plugin is 
available in the official QGIS Python plugins repository [1], anyway 
such plugin has very likely nothing to do with the web map error, which, 
if I understood correctly, doesn't occur using QGIS and the "OSM place 
search" plugin, but it occurs using the web map.


It seems to me the error message very likely comes from the "OpenLayers 
Control Geocoder" [2] which is an OpenLayers extension used by the web 
map [3].


Best regards.

Andrea


[1] https://plugins.qgis.org/plugins/nominatim/
[2] 
https://github.com/Dominique92/ol-geocoder/blob/eff2edddaaaebb2038ea2b00206f93de05d73b4a/src/nominatim.js#L164

[3] https://github.com/Dominique92/ol-geocoder
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Re: [Qgis-user] Problems Initializing qgis

2023-08-28 Thread Andrea Giudiceandrea via QGIS-User

Juan Rafael Suárez juanrsuarez267 at gmail.com
Sat Aug 26 18:35:30 PDT 2023



A file was downloaded to my P.C: "QGIS-OSGeo4W-3.28.10-1"
I clicked on it, and the software was installed.


Hi Juan Rafael,
FYI, I've installed the same version of QGIS using the same stand-alone 
.msi installer "QGIS-OSGeo4W-3.28.10-1" on a Windows 10 64 bit system 
and I don't see any issue.


Best regards.

Andrea

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Re: [Qgis-user] Problems Initializing qgis

2023-08-27 Thread Andrea Giudiceandrea via QGIS-User

Juan Rafael Suárez juanrsuarez267 at gmail.com
Sat Aug 26 18:35:30 PDT 2023


Please ensure that you have correctly created a new QGIS user profile 
[1] and that you are using it.
If the issue occurs also using a new QGIS user profile, then I suggest 
you to file a new ticket, about the issue you are experiencing, at 
https://trac.osgeo.org/osgeo4w/ or at https://github.com/qgis/QGIS


Best regards.

Andrea

[1] 
https://docs.qgis.org/3.28/en/docs/user_manual/introduction/qgis_configuration.html#working-with-user-profiles

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Re: [Qgis-user] Problems Initializing qgis

2023-08-26 Thread Andrea Giudiceandrea via QGIS-User

Juan Rafael Suárez juanrsuarez267 at gmail.com
Fri Aug 25 14:20:10 PDT 2023



I am working in windows 10.0 System 32.0
I upgraded to Qgis 3.28.10
Now I have these issues:
When I start the program at the first time nothing happens.
Then I start by the second time, and the the program starts, but I get this
message:
"Creation of missing tbl_srs in the private qgis.db failed
disl I/O error"


Hi Juan Rafael,
could you please specify in details which installer have you used to 
install QGIS and how have you installed / upgraded QGIS? Does the 
Windows user running QGIS have writing rights for the file qgis.db?


Best regards.

Andrea

P.S.: what is  "windows 10.0 System 32.0"? Is it a Windows 10 32 bit?
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Re: [Qgis-user] spatial analysis toolbox - testing for autocorrelation

2023-08-19 Thread Andrea Giudiceandrea via QGIS-User

Thayer Young via QGIS-User Fri, 18 Aug 2023 13:28:49 -0700


  this means that geopandas is not installed. (It is installed in Lima not 
Firenze.)


Hi Thayer,
it seems to me the Python module "geopandas" is installed by default by 
both the current QGIS all-in-one stand-alone OSGeo4W .msi installer and 
the "network" OSGeo4W .exe installer (for qgis-full and qgis-ltr-full 
packages) for both QGIS 3.28 and QGIS 3.32.


Anyway, another simple way to install the required Python packages, 
avoiding to use the shell and type commands in the CLI, is to use the 
OSGeo4W "Setup" program: all the required packages could be installed 
with few clicks.


Best regards.

Andrea
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Re: [Qgis-user] Georeference DSM files in QGIS Using Georeferencer

2023-07-28 Thread Andrea Giudiceandrea via QGIS-User

Il 28/07/2023 20:53, Mark C Quilter ha scritto:

I am using the version you stated.  See attached from QGIS Help > About.


Hi Mark,
I may be wrong, but from the provided screenshot of the Help > About 
dialog window and from your initial message it looks like you are using 
QGIS 3.28.2 and not QGIS 3.28.9.


Best regards.

Andrea
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Re: [Qgis-user] Georeference DSM files in QGIS Using Georeferencer

2023-07-28 Thread Andrea Giudiceandrea via QGIS-User

Mark C Quilter mcqqov at gmail.com
Thu Jul 27 11:23:08 PDT 2023
We were able to align the orthomosaic using Georeferencer (
3.28.2).  We have not been able to rectify the DSM.


Hi Mark,
could you please try if the issue does occur also using the latest 
available QGIS LTR version 3.28.9?

Various georeferencer bugs have been fixed since QGIS 3.28.2.

You can see the still open issue report about the Georeferencer at 
https://github.com/qgis/QGIS/issues?q=is%3Aissue+label%3AGeoreferencer+is%3Aopen 
and the already closed one at 
https://github.com/qgis/QGIS/issues?q=is%3Aissue+label%3AGeoreferencer+is%3Aclosed


Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Clipping ecw to mask not working

2023-07-26 Thread Andrea Giudiceandrea via QGIS-User

Michael Dufty MDufty at mbsenvironmental.com.au
Tue Jul 25 22:02:06 PDT 2023



I'm having issues trying to clip ecw images to a mask layer.


Hi Michael,
what is the Operating System you are running QGIS on? Can you display 
the ECW layer in QGIS? Which is the format of the output raster layer 
set in the processing algorithm? What is the full execution log of the 
processing algorithm? What is the GDAL library version used by QGIS on 
your system? Does the GDAL library support the ECW format in your system?


The "Clip raster by mask layer" processing algorithm is actually 
executed by the gdalwarp utility of the GDAL/OGR library.


Have you tried to directly execute the gdalwarp command (as generated by 
the processing algorithm) in the shell of your system?


Best regards.

Andrea
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Re: [Qgis-user] Advanced digitizing tool feet/meters error

2023-07-21 Thread Andrea Giudiceandrea via QGIS-User

Richard Greenwood richard.greenwood at gmail.com
Fri Jul 21 13:27:19 PDT 2023



I believe I'm seeing a regression in QGIS 3.32 in the advanced
digitizing tool. When I'm working on a layer with a coordinate system
that's in feet (and the project coordinate system is the same), distances
that I enter are being multiplied by 0.3048.  e.g. I enter 1000 and it
draws a line that's 304.8 feet.


Hi Richard,
maybe the PR at https://github.com/qgis/QGIS/pull/53037 is related to 
your issue.


Best regards.

Andrea
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Re: [Qgis-user] doubts about the azimuth value obtained

2023-07-18 Thread Andrea Giudiceandrea via QGIS-User

Alexandre Neto alexandre.neto at qcooperative.net
Tue Jul 18 00:48:01 PDT 2023



It's surprising to me if it accepts something that are not points. If it
does, I would assume it uses the geometries centroids, not the boundaries.


Hi Alexandre,
the "azimut" function doesn't accept anything else than points as arguments.

In fact, in the expression used by Enrique Sagredo Blanco, the arguments 
of the "azimut" function are the "start_point" and the "end_point" of 
the current geometry:


degrees( azimuth(  start_point(  $geometry ), end_point(  $geometry )))

Best regards.

Andrea
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Re: [Qgis-user] Exporting maps out of QGIS into Adobe Pro to create layered pdf files

2023-07-12 Thread Andrea Giudiceandrea via QGIS-User

Jamie Gould jgould at longshore.ca
Wed Jul 12 13:49:22 PDT 2023



I'm pretty new to QGIS.  In the first link you sent, are those PDF Export 
Options set in Adobe or in QGIS, and if so, where do I find the settings to see 
if this how things are currently configured?


Hi Jamie,
almost everything you need to know about the QGIS functionalities is 
explained in the QGIS documentation available in various languages at 
https://www.qgis.org/en/docs/index.html
How to create a print layout in QGIS is explained at 
https://docs.qgis.org/3.28/en/docs/user_manual/print_composer/overview_composer.html#overview-of-the-print-layout
How to export a print layout in PDF format is explained at 
https://docs.qgis.org/3.28/en/docs/user_manual/print_composer/create_output.html#export-as-pdf


Best regards.

Andrea
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Re: [Qgis-user] No visualizo archivos laz en QGIS

2023-06-30 Thread Andrea Giudiceandrea via QGIS-User

fotorafa at gmail.com fotorafa at gmail.com
Fri Jun 30 04:30:39 PDT 2023



Mensajes que me aparecen en QGIS al cargar los archivos:


Hi Rafa,
if you had specified this in your first post, we would have saved some 
time figuring out that this is a symptom that there may be a problem in 
the data or in the untwine utility or in the pdal library or in QGIS itself.


For the record, the reported error message in English is: Failed to 
calculate statistics of the point cloud


I suggest you to report the issue in English in the QGIS issue report 
system on GitHub https://github.com/qgis/QGIS/issues in order to have 
the chance that some developers may have a look at such issue, find the 
root cause and, if applicable fix it or suggest a workaround.


Best regards.

Andrea
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Re: [Qgis-user] No visualizo archivos laz en QGIS

2023-06-30 Thread Andrea Giudiceandrea via QGIS-User

fotorafa at gmail.com fotorafa at gmail.com
Fri Jun 30 01:28:45 PDT 2023



He cargado archivos .laz y no veo los puntos en el panel, solo veo una
cuadrícula de trazos roja.


Hi fotorafa,
maybe the symbology of the layer is set to "Extent Only".

Have you read the QGIS documentation about "Working with Point Clouds" 
available at the following link?


https://docs.qgis.org/3.28/en/docs/user_manual/working_with_point_clouds/point_clouds.html#feature-rendering-types

Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Reclassify field values from txt rule file in QGIS

2023-06-29 Thread Andrea Giudiceandrea via QGIS-User

Hi Fabio,
the "rules" and the "column" option of the GRASS-v.reclass module are 
mutually exclusive. If you set both those options, the module fails to 
execute and it will output the reported error message.


In the QGIS processing algorithm v.reclass there is a bug which prevents 
the user to only specify the "rules" parameter.


So, if you want to use the GRASS v.reclass module through the QGIS 
processing algorithm v.reclass, you need to workaround such bug.


You don't have to use the QGIS Python console (which I haven't advised 
to use).


You need to locate the file named "v.reclass.txt" which is in the path 
\apps\qgis\python\plugins\grassprovider\description\ or 
\apps\qgis-ltr\python\plugins\grassprovider\description\ (depending on 
you are using QGIS or QGIS LTR) inside the QGIS installation folder. 
Then you need to edit such file using a text editor and change the line 
as described before.


This way you can use the QGIS processing algorithm v.reclass specifying 
only the "rules" parameter (and not specifying the "column" parameter) 
and thus avoiding the error.


If you can't or don't want to make such modification of the 
v.reclass.txt file by yourself, then you need to wait for the release of 
the next QGIS 3.28 and 3.32 versions and use one of them, since a fix 
for such bug is pending approval https://github.com/qgis/QGIS/pull/53643 
and it will be hopefully available in QGIS 3.28.9 and 3.32.1 and next 
versions.


Best regards.

Andrea

Il 29/06/2023 10:43, fabio castelli ha scritto:

Hi Andrea,

thank you very much for your support. Sorry, I'm new at this.
I've tried to print the code that you sent me in the Python console but 
I get errors:

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Re: [Qgis-user] Reclassify field values from txt rule file in QGIS

2023-06-28 Thread Andrea Giudiceandrea via QGIS-User

fabio castelli fabio.castelli92 at outlook.it
Wed Jun 28 05:52:45 PDT 2023



I kindly ask for your support with an issue related to the reclassification of 
attribute tables with the v.reclass function.
Here's the link to the question posted on Stackexchenge: 
https://gis.stackexchange.com/questions/462318/reclassify-field-values-from-txt-rule-file-in-qgis


Hi Fabio,
looking at your question posted on Stackexchenge, the error message 
("Either 'rules' or 'column' must be specified") is very clear and it is 
due to the fact the you have specified both the "rules" and "column" 
parameters instead of only one of them.


Anyway, it looks like it is actually incorrectly impossible to specify 
only the "rules" parameter in the QGIS processing algorithm GUI for the 
v.reclass GRASS-GIS module without also specifying the "column" 
parameter: this is due to the fact that the "column" parameter is 
incorrectly flagged as mandatory instead of optional.


You can workaround this issue editing the v.reclass.txt file in the 
folder with path [QGIS installation 
dir]\apps\qgis\python\plugins\grassprovider\description\ or [QGIS 
installation 
dir]\apps\qgis-ltr\python\plugins\grassprovider\description\ (provided 
you are using QGIS 3.32 or QGIS LTR 3.28 on Windows) and to change the 
the sixth line from:


QgsProcessingParameterField|column|The name of the column whose values 
are to be used as new categories|None|input|-1|False|False


to:

QgsProcessingParameterField|column|The name of the column whose values 
are to be used as new categories|None|input|-1|False|True



I also suggest you to read the v.reclass GRASS-GIS module manual 
available at https://grass.osgeo.org/grass82/manuals/v.reclass.html in 
order to better understand what the "rules" file must contains.



Best regards.

Andrea Giudiceandrea
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Re: [Qgis-user] Most foolproof method for installing on Windows 10?

2023-06-22 Thread Andrea Giudiceandrea via QGIS-User

Gert-Jan van der Weijden (GISNederland) gert-jan at gisnederland.nl
Tue Jun 20 08:00:08 PDT 2023


Over the past years my experience with the regular .msi (straight from 
https://www.qgis.org/nl/site/forusers/download.html) have been better 
than the OSGEO4W installer, for the same reasons ("DLL hell" ) you mention.


Especially if you just need plan QGis, and not the side-tools like 
gdal/ogr , grass etc.


Hi Gert-Jan,
QGIS cannot work without the GDAL/OGR library.

The OSGeo4W *.msi installer installs all the needed libraries (like 
GDAL/OGR, GEOS, PROJ, Qt, Python with some modules, ...) plus a lot of 
not strictly needed tools and libraries which are however very useful 
(like GRASS-GIS, SAGA-GIS for QGIS 3.28, various GDAL/OGR plugins and 
various additional Python modules).


Using the OSGeo4W Network installer osgeo4w-setup.exe, the user can 
install all the same packages installed by the .msi installer or only 
the needed packages.


The *.msi installer is actually a stand-alone / all-in-one version of 
the OSGeo4W Network installer.


Best regards.

Andrea
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[Qgis-user] [QGIS-Developer] Planned support for JPEG XL?

2023-06-17 Thread Andrea Giudiceandrea via QGIS-User

[QGIS-Developer] Planned support for JPEG XL?
DIF Tue, 13 Jun 2023 12:10:54 -0700


According to GDAL's website, GDAL has support for JPEG XL compression since 
3.6.0 but only when built against libjxl<https://github.com/libjxl/libjxl>. 
Considering that QGIS now uses GDAL 3.7, I was wondering if there was any plan 
to include it with the libjxl library in the future.


Hi Jean-François,
if you are using Windows OS and GDAL provided by OSGeo4W, have you tried 
to update GDAL to the latest GDAL 3.7.0-2 package which was build 
against libjxl?


See 
https://github.com/jef-n/OSGeo4W/commit/c54d56a15918c4ed63afa5b776e6a5041f26f38d


Best regards.

Andrea Giudiceandrea
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