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<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Hi Cinda,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">I cant help diagnose the issue, but I can give you an alternative method of using gdal_polygonize<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Im assuming you are using this under Windows. Using the OSGeo4W Shell, navigate to the folder containing the dataset and then use<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">gdal_polygonize raster_in.tif -f "ESRI Shapefile" shapefile_out.shp<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">You can alternatively use the full file path also instead of navigating to a specific folder. A full list of additional commands can be found here<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><a href="https://gdal.org/programs/gdal_polygonize.html">https://gdal.org/programs/gdal_polygonize.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">It should be quicker anyway than trying to run it from within QGIS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Richard<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Qgis-user <qgis-user-bounces@lists.osgeo.org>
<b>On Behalf Of </b>Cinda Graubard<br>
<b>Sent:</b> 10 December 2019 19:46<br>
<b>To:</b> qgis-user@lists.osgeo.org<br>
<b>Subject:</b> [Qgis-user] question about GDAL module ( QGIS 3.4.14-1 and 3.10.1-A)<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’m trying to access a few gdal modules and keep getting this message:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">2019-12-10T11:22:46 INFO </span><span lang="EN-US">GDAL execution console output<br>
C:\OSGeo4W64\bin\python3.exe: No module named gdal_polygonize<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I encountered this problem with 3.10.1-A and then went back and installed the last ltr 3.4-14-1 and have the same error.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’ve checked the packages installed through the advanced installer, and the GDAL/OGR library and comandline tools are included, though I’m not extremely familiar with this interface so I could be missing something.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Can anyone suggest a solution for this?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cinda<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:gray">…………………………………………………………………………………………………<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:gray">Cinda Graubard<o:p></o:p></span></p>
<p class="MsoNormal"><b><i><span lang="EN-US" style="color:#4F81BD">GeoMax<o:p></o:p></span></i></b></p>
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