Hey Paul,
I think [ gdal_contour ] is more close to what you think you need: here's a quick turorial I just found on it: http://woostuff.wordpress.com/2011/09/27/generating-contours-using-gdal-via-shell-or-qgis/ Kind regards, Ves Nikos Στις 22/10/2012 1:38 μμ, ο/η Paul Meems έγραψε:
Hi all, I'm investigating gdal_polygonize.py I'm thinking of using it to convert a DEM-file to a polygon shapefile. I did a quick test using gdal_polygonize.py logan.tif -f "ESRI Shapefile" logan_poly.shp and got a shapefile. But this shapefile is huge, it created a polygon for every pixel value. I was thinking it would be a bit more like gdal_contour which uses an interval. Am I not understanding the purpose of gdal_polygonize? Can somebody tell me some real-life use cases when to use this? Thanks, Paul _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
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