Sorry, I meant Even (not Evan). Another workaround I found is the dissolve polygons tool in SAGA (instaled from OSGeo4W). I found this tool very handy since SAGA has a command line option and this specific tool allows up to three dissolve fields to be specified. My syntax was:
saga_cmd shapes_polygons "Polygon Dissolve" -POLYGONS=infile.shp -DISSOLVED=outfile.shp -FIELD_1=combo -FIELD_2=zone -FIELD_3=val -DISSOLVE=0 Dan -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-dev-Dissolve-shapefile-using-GDAL-OGR-tp5036930p5068800.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev