[gdal-dev] python script not working

[Sean Gillies]

Dennis,

You either have to know the absolute path to gdal_polygonize.py or have 
its location on your system path to make that work. And I also recommend
the subprocess module instead of the deprecated os.system.

     import subprocess

     subprocess.check_output(
         ['/PATH/TO/gdal_polygonize.py',
          '-f KML',
          'tmp.4.vrt',
          'tmp.5.kml'])

The gdal_polygonize.py script is a very thin wrapper around the 
gdal.Polygonize() function. Shelling out from a Python script to another 
Python script is kind of round-a-bout – you could just grab the 
gdal_polygonize.py code and reuse it in your Python program.

On 1/16/14, 9:53 AM, Dennis Burgess wrote:
> Runing a command to do a gdal_polygonize, the gdal_translate and org2org
> functions work just ifne, just not poloygoize..??
>
> os.system('gdal_polygonize tmp.4.vrt -f KML tmp.5.kml')
>
> I get :
>
> python: can't open file '\bin\gdal_polygonize.py';: error 2, no such
> file or directory
>
> any thoughts, windows gdal using osgeo4w
>
> *_Dennis Burgess,_**//*


-- 
Sean Gillies
sean at mapbox.com