Dear list, the projection "Bertin 1953" was recently added in Proj4 [0] [0] https://github.com/OSGeo/proj.4/blob/master/src/PJ_bertin1953.c What would be the fastest way to try this out, except of compiling all Proj4 and GDAL from source, then re-compile whatever tool uses GDAL again? Thank you, Nikos