Hi Al, have you tried with ImportFromWkt? The string is a Well Known Text definition of a SpatialReference.
Sig srs = osr.SpatialReference() srs.ImportFromWkt(""" PROJCS["unnamed", GEOGCS["NAD83", DATUM["North_American_Datum_1983", SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]], TOWGS84[0,0,0,0,0,0,0], AUTHORITY["EPSG","6269"]], PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]], AUTHORITY["EPSG","4269"]], PROJECTION["Albers_Conic_Equal_Area"], PARAMETER["standard_parallel_1",34], PARAMETER["standard_parallel_2",40.5], PARAMETER["latitude_of_center",0], PARAMETER["longitude_of_center",-120], PARAMETER["false_easting",0], PARAMETER["false_northing",-4000000]] """) Il giorno lun, 20/08/2012 alle 22.07 -0700, Al Niessner ha scritto: > Now I need to create my SpatialReference for the UTM (NAD83) > coordinates. So, I go back to my USGS geo-referenced PDF dataset and > look at its projection: > > 'PROJCS["unnamed",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS > > 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4269"]],PROJECTION["Albers_Conic_Equal_Area"],PARAMETER["standard_parallel_1",34],PARAMETER["standard_parallel_2",40.5],PARAMETER["latitude_of_center",0],PARAMETER["longitude_of_center",-120],PARAMETER["false_easting",0],PARAMETER["false_northing",-4000000]]' > > > The projection onto the Albers_Conic is different than the base NAD83 > that is in osr. So, I tried several random swings at doing and > ImportFrom but none of them work. Some even crash hard. Since I do not > understand the acronyms it really is just random guessing. I > understand URL and this is not a URL and same with XML. The rest are a > bit of a mystery to me. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev