Xiaodong, Have you tried the gdal_polygonize.py script ( http://www.gdal.org/gdal_polygonize.html)? Since your raster is classified, this should work nicely.
On Fri, Feb 26, 2010 at 3:38 AM, Xiaodong Zhang <[email protected]>wrote: > Hi, > > Currently, I'm using gdal and ogr to convert a map after classification > into a point shape file. Since the classification map typically consists of > zones, a polygon shape file would make more sense. I'm wondering if anyone > would know or share the idea of how to convert a map into a polygon shape > file directly. > > Thanks > Xiaodong > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9848167848 17.241582N 80.142635E
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