id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 19171,unnecessary SRID lookup makes coordinate transform from custom SRS to standard SRS fail,reidpr@…,nobody,"Running the attached script crashes with `django.contrib.gis.gdal.error.SRSException: Unsupported SRS.`. It shouldn't, as the `CoordTransform` object contains complete information for the transformation. The problem seems to be that the SRID of point `b` is looked up before the transformation, and this lookup fails (as is expected, because it's a custom SRS). But the lookup is not necessary, because the SRID of point `b` is ignored during the transformation (which can be demonstrated by substituting a bogus SRID on `b` before the transformation -- the results are still correct). This is Django version 1.4.1 on: - Fedora 14 with custom-compiled GDAL 1.9.2, GEOS 3.3.5, and PROJ4 4.8.0 - Debian Wheezy with GDAL 1.9.0, GEOS 3.3.3, and PROJ4 4.7.0 that came with the OS. ",Bug,closed,GIS,1.4,Normal,fixed,coordinate transformation,,Accepted,1,0,0,0,0,0