[Osgeo4w-trac] Re: [osgeo4w] #120: gdal_polygonize missing

[OSGeo4W]

#120: gdal_polygonize missing
-----------------------+----------------------------------------------------
Reporter:  lutra       |        Owner:  warmerdam
    Type:  defect      |       Status:  assigned 
Priority:  major       |    Component:  Package  
 Version:  1.0         |   Resolution:           
Keywords:  pkg-gdal16  |  
-----------------------+----------------------------------------------------
Comment (by jef):

 Short diagnostic:

  1. The batch files used to spawn qgis call {{{gdal16.bat}}}
  1. {{{gdal_polygonize(.bat)}}} is a batch file in {{{apps/gdal-16/bin}}}
  1. calling {{{gdal_polygonize}}} from the QGIS' GRASS shell (just for the
 environment) gives:
 {{{
 Traceback (most recent call last):
   File "C:\OSGeo4W\apps\gdal-16\bin\gdal_polygonize.py", line 34, in
 <module>
     import gdal, ogr, osr
   File "C:\OSGeo4W\apps\Python25\lib\site-packages\gdal.py", line 2, in
 <module>

   File "C:\OSGeo4W\apps\Python25\lib\site-packages\osgeo\gdal.py", line 7,
 in <module>
 ImportError: No module named _gdal
 }}}
  1. Looks like the {{{PYTHONPATH}}} is messed up somehow
 {{{%OSGEO4W_ROOT%\apps\gdal-16\pymod}}} is missing.  Interestingly
 {{{%OSGEO4W_ROOT%\apps\gdal-16\bin}}} is in the {{{PATH}}}.
  1. running {{{gdal16.bat}}} again prepends it to the {{{PYTHONPATH}}} and
 {{{gdal_polygonize}}} works.

-- 
Ticket URL: <http://trac.osgeo.org/osgeo4w/ticket/120#comment:4>
OSGeo4W <http://trac.osgeo.org/osgeo4w>
OSGeo4W is the Windows installer for the OSGeo stack.