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<p>Hi Andrea,</p>
<p>I installed version 3.40.4 ltr and when I use the same "export to
raster" algorithm, I get a new message:<br>
<br>
<i>QGIS Version: 3.40.4-Bratislava<br>
Code Revision: 4dd7d7e969<br>
Qt Version: 5.15.13<br>
Python Version: 3.12.9<br>
GDAL Version: 3.10.2<br>
GEOS Version: 3.13.0-CAPI-1.19.0<br>
Proj Version: Rel. 9.5.1, December 1st, 2024<br>
PDAL version: 2.8.3 (git-version: 56e405)<br>
Algorithm started at: 2025-12-14T14:13:01<br>
Starting algorithm 'Export to raster (using triangulation)'…<br>
Input parameters:<br>
<br>
{ 'FILTER_EXPRESSION' : 'Classification = 2 OR 6',
'FILTER_EXTENT' : None, 'INPUT' : 'copc://E:/My
Documents/QGIS/LIDAR
tiles/LHD_FXX_0801_6398_PTS_LAMB93_IGN69.copc.laz', 'ORIGIN_X' :
None, 'ORIGIN_Y' : None, 'OUTPUT' : 'E:/My Documents
/QGIS/dalles MNT/0801-6398k.tif', 'RESOLUTION': 0.05,
'TILE_SIZE': 1000 }<br>
<br>
wrench command: C:/program files/QGIS
3.40.4/apps/qgis-ltr/./pdal_wrench.exe to_raster_tin
"--input=E:/My Documents/QGIS/LIDAR
slabs/LHD_FXX_0801_6398_PTS_LAMB93_IGN69.copc.laz"
"--output=E:/Mes Documents/QGIS/dalles MNT/0801-6398k.tif"
--resolution=0.05 --tile-size=1000 "--filter=Classification == 2
||<br>
<br>
The process stopped so unexpected<br>
Execution failed after 2.89 seconds<br>
<br>
Loading result layers<br>
The following layers were not generated correctly.<br>
<br>
• E:/My Documents/QGIS/dalles MNT/0801-6398k.tif<br>
You can check the 'Log Messages Panel' in the QGIS main window
to find more information about the algorithm execution.</i><br>
<br>
Thank you in advance for your suggestion.</p>
<p>Best regards.</p>
<p>PW</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Le 14/12/2025 à 08:42, Andrea
Giudiceandrea a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:5026ae44-18c7-4936-8a78-b5a86bf33826@libero.it">
<blockquote type="cite">Pascal WISSENBERG p.wissenberg at
orange.fr
<br>
Sat Dec 13 01:51:31 PST 2025
<br>
</blockquote>
<br>
<blockquote type="cite">j'utilise QGis 3.34.5 et depuis quelques
jours, lorsque je veux exporter un fichier LIDARHD de l'IGN vers
un raster (en utilisant la triangulation) pour obtenir un
fichier MNT, j'ai un retour:
<br>
/Warning 1: Can't open E:/ Mes Documents/QGIS/ Dalles
MNT\0887-6754m\0_0.tif. Skipping it/ par exemple.
<br>
</blockquote>
<br>
Hi Pascal,
<br>
actually you are using QGIS 3.44.5, according to the provided log.
<br>
<br>
Unfortunately, it looks like there is an issue when using the PDAL
"Export to raster (using triangulation)" processing algorithm
running the QGIS 3.44.5 and QGIS LTR 3.40.13 on Windows in order
to convert a COPC file to a GeoTIFF file.
<br>
<br>
You should be able to perform the conversion on Windows 10 running
a previous QGIS version, like QGIS LTR 3.40.7 [1].
<br>
<br>
Best regards.
<br>
<br>
Andrea Giudiceandrea
<br>
<br>
<br>
[1] <a class="moz-txt-link-freetext" href="https://qgis.org/downloads/QGIS-OSGeo4W-3.40.7-1.msi">https://qgis.org/downloads/QGIS-OSGeo4W-3.40.7-1.msi</a>
<br>
<br>
</blockquote>
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