id summary reporter owner description type status priority milestone component version resolution keywords cc 2802 [raster] ST_MapAlgebra checks callbacks parameters but not return type strk Bborie Park "I tried using a callback only accepting 2 arguments and ST_MapAlgebra complained about that. But it did not complain about the callback returning an integer rather than a float8. As the C code fetches the return value in binary form, I guess returning anything but ""float8"" would just not work, silently. If this is confirmed, it would be nice for ST_MapAlgebra to also check the return type of the provided callback." enhancement closed medium PostGIS 2.1.4 raster 2.1.x fixed history