id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 5395,RPC GeoTransform Approximation Wrong,warmerdam,warmerdam,"The logic for computing the linear approximation of the RPC (adfGTFromLL) in GDALCreateRPCTransformer() is mixed up. This leads to situations where pixel/line to lat/long conversions do not converge as can be seen in the following example with the attached RPC in a VRT. {{{ $ gdaltransform rpc_5395.vrt -t_srs WGS84 0 0 130.85009097174 -7.59034547771687 0 warmerdam@gdal.cmo:~/pl/planet_common/t965 $ gdaltransform -i rpc_5395.vrt -t_srs WGS84 28.26163232 -27.79853245 1.24353157389123e-05 -2.78099425941036e-05 0 }}} The mapping from 0,0 should be 28.26163232 -27.79853245 but comes out with a weird result which on debugging is due to a lack of convergence. ",defect,closed,normal,1.11.0,Algorithms,svn-trunk,normal,fixed,RPC,