id summary reporter owner description type status priority milestone component version severity resolution keywords cc 6377 RPC DEM inverse transform failing at DEM boundary Even Rouault Even Rouault When the reverse RPC DEM solver is invoked with a point whose (lon,lat) solution is close to the boundaries of the DEM, some initial guess might be outside of the DEM, which cause the process to fail. In that case, we can try to use the closest value at the boundary of the DEM as a best estimate to feed the iteration steps. defect closed normal 2.1.0 Algorithms unspecified normal fixed rpc dem