mswkt = '''GEOGCS["Arc 1960",DATUM["Arc_1960",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-175,-23,-303,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4210"]]''' m = mapObj('') m.setWKTProjection(mswkt) lyr = layerObj(m) lyr.setWKTProjection(mswkt)