[osgeo4w-dev] [osgeo4w] #898: PDAL algs and pdal_wrench.exe don't work in latest QGIS versions

Sun Dec 14 09:15:22 PST 2025

#898: PDAL algs and pdal_wrench.exe don't work in latest QGIS versions
------------------------+----------------------------
Reporter:  andreaerdna  |       Owner:  osgeo4w-dev@…
    Type:  defect       |      Status:  new
Priority:  normal       |   Component:  Package
 Version:               |  Resolution:
Keywords:               |
------------------------+----------------------------
Description changed by andreaerdna:

Old description:

> PDAL processing algorithms (e.g. "Export to raster" or "Export to raster
> (using triangulation") and pdal_wrench.exe don't work in latest QGIS LTR
> 3.40.13, QGIS 3.44.5 and QGIS 3.99.0-Master.
>
> The algorithm's execution log reports:
>
> {{{
> QGIS version: 3.40.13-Bratislava
> QGIS code revision: 6c6bebb0e7
> Qt version: 5.15.13
> Python version: 3.12.12
> GDAL version: 3.12.0
> GEOS version: 3.13.1-CAPI-1.19.2
> PROJ version: Rel. 9.7.0, September 1st, 2025
> PDAL version: 2.9.0 (git-version: 42b180)
> Algorithm started at: 2025-12-14T11:57:59
> Algorithm 'Export to raster' starting…
> Input parameters:
> { 'ATTRIBUTE' : 'Z', 'FILTER_EXPRESSION' : '', 'FILTER_EXTENT' : None,
> 'INPUT' :
> 'copc://C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz',
> 'ORIGIN_X' : None, 'ORIGIN_Y' : None, 'OUTPUT' : 'TEMPORARY_OUTPUT',
> 'RESOLUTION' : 1, 'TILE_SIZE' : 1000 }
>
> wrench command: C:/OSE37B~1/apps/qgis-ltr/./pdal_wrench.exe to_raster
> --input=C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz
> --output=C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif
> --attribute=Z --resolution=1 --tile-size=1000 --threads=4
> 0....10....20....30....40....50....60....70....80....90....100 - done.
> Warning 1: Can't open
> C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738\OUTPUT\0_0.tif.
> Skipping it
>
> Process completed successfully
> Execution completed in 2.43 seconds
> Results:
>   OUTPUT:
> C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif
>
> Loading resulting layers
> The following layers were not correctly generated.
> •
> C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif
> You can check the 'Log Messages Panel' in QGIS main window to find more
> information about the execution of the algorithm.
> }}}
>

> The issues occurs also directly executing pdal_wrench in the OSGeo4W
> Shell:
>
> {{{
> pdal_wrench.exe to_raster
> --input=C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz
> --output=C:/Users/Andrea/Downloads/exportedcopc.tif --attribute=Z
> --resolution=1 --tile-size=1000 --threads=4
> 0....10....20....30....40....50....60....70....80....90....100 - done.
> Warning 1: Can't open C:/Users/Andrea/Downloads\exportedcopc\0_0.tif.
> Skipping it
> }}}
>
> The issue doesn't occur if pdal_wrench.exe, provided by the qgis-
> ltr-3.40.13-1 package, is replaced with the one from the qgis-
> ltr-3.40.12-1 package.
>
> I suppose the issue may be due to the fact that while pdal_wrench.exe in
> qgis-ltr-3.40.13-1 is built against gdal312, pdalcpp.dll (which
> pdal_wrench.exe depends on) is still build against gdal311.

New description:

 Some PDAL processing algorithms (e.g. "Export to raster" or "Export to
 raster (using triangulation") and pdal_wrench.exe don't work in latest
 QGIS LTR 3.40.13, QGIS 3.44.5 and QGIS 3.99.0-Master when the input layer
 is a COPC file.

 The algorithm's execution log reports:

 {{{
 QGIS version: 3.40.13-Bratislava
 QGIS code revision: 6c6bebb0e7
 Qt version: 5.15.13
 Python version: 3.12.12
 GDAL version: 3.12.0
 GEOS version: 3.13.1-CAPI-1.19.2
 PROJ version: Rel. 9.7.0, September 1st, 2025
 PDAL version: 2.9.0 (git-version: 42b180)
 Algorithm started at: 2025-12-14T11:57:59
 Algorithm 'Export to raster' starting…
 Input parameters:
 { 'ATTRIBUTE' : 'Z', 'FILTER_EXPRESSION' : '', 'FILTER_EXTENT' : None,
 'INPUT' :
 'copc://C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz',
 'ORIGIN_X' : None, 'ORIGIN_Y' : None, 'OUTPUT' : 'TEMPORARY_OUTPUT',
 'RESOLUTION' : 1, 'TILE_SIZE' : 1000 }

 wrench command: C:/OSE37B~1/apps/qgis-ltr/./pdal_wrench.exe to_raster
 --input=C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz
 --output=C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif
 --attribute=Z --resolution=1 --tile-size=1000 --threads=4
 0....10....20....30....40....50....60....70....80....90....100 - done.
 Warning 1: Can't open
 C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738\OUTPUT\0_0.tif.
 Skipping it

 Process completed successfully
 Execution completed in 2.43 seconds
 Results:
   OUTPUT:
 C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif

 Loading resulting layers
 The following layers were not correctly generated.
 •
 C:/Users/Andrea/AppData/Local/Temp/processing_TfzXfh/017254694c134706ad41d27cb61c8738/OUTPUT.tif
 You can check the 'Log Messages Panel' in QGIS main window to find more
 information about the execution of the algorithm.
 }}}

 The issues occurs also directly executing pdal_wrench in the OSGeo4W
 Shell:

 {{{
 pdal_wrench.exe to_raster
 --input=C:/Users/Andrea/Downloads/2034000_7275500_LIDAR2021.copc.laz
 --output=C:/Users/Andrea/Downloads/exportedcopc.tif --attribute=Z
 --resolution=1 --tile-size=1000 --threads=4
 0....10....20....30....40....50....60....70....80....90....100 - done.
 Warning 1: Can't open C:/Users/Andrea/Downloads\exportedcopc\0_0.tif.
 Skipping it
 }}}

 The issue doesn't occur if pdal_wrench.exe, provided by the qgis-
 ltr-3.40.13-1 package, is replaced with the one from the qgis-
 ltr-3.40.12-1 package.

 I suppose the issue may be due to the fact that while pdal_wrench.exe in
 qgis-ltr-3.40.13-1 is built against gdal312, pdalcpp.dll (which
 pdal_wrench.exe depends on) is still build against gdal311.

 See also https://github.com/qgis/QGIS/issues/61343.

--
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Ticket URL: <https://trac.osgeo.org/osgeo4w/ticket/898#comment:1>
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