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<p class="MsoNormal">When we install QGIS 2.14 or 2.18 on our lab machines running Windows 7 using our software distribution system, everything works fine except the polygonize tool. When we install QGIS on standalone machines this tool tends to work fine in
most (but not all) cases, occasionally we get the same problem. I’m struggling to find the cause of this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To reproduce:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1) Load a raster file.<o:p></o:p></p>
<p class="MsoNormal">2) Raster->Conversion->polygonize. Choose the input raster and somewhere to write the output vector file and select 'DN'.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Error:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Traceback (most recent call last):
<br>
File "c:\Programs\QGIS\bin\gdal_polygonize.py", line 35, in <br>
from osgeo import gdal <br>
File "c:\Programs\QGIS\apps\Python27\lib\site-packages\osgeo\__init__.py", line 21, in
<br>
_gdal = swig_import_helper() <br>
File "c:\Programs\QGIS\apps\Python27\lib\site-packages\osgeo\__init__.py", line 17, in swig_import_helper
<br>
_mod = imp.load_module('_gdal', fp, pathname, description) <br>
ImportError: DLL load failed: The operating system cannot run %1. </span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any suggestions gratefully received.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB">______________________________________</span><span style="font-size:10.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;mso-fareast-language:EN-GB">Stephen Shaw<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB">Systems Support Technician<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB">College of Science<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB">Swansea University<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB">Singleton Park<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB">SWANSEA SA2 8PP<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;mso-fareast-language:EN-GB"><br>
Tel: 01792 513032<br>
Email: <a href="mailto:s.j.shaw@swan.ac.uk" title="mailto:s.j.shaw@swan.ac.uk"><span style="color:blue">mailto:s.j.shaw@swan.ac.uk</span></a> :)<br>
______________________________________ </span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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