Martin, It seems you want to have a read at my yesterday-written RFC: https://github.com/OSGeo/proj.4/pull/1149
Particularly the part concerning the database: http://even.rouault.free.fr/proj_cpp_api/rfc-2.html#database and the data/sql/ files mentionne at http://even.rouault.free.fr/proj_cpp_api/rfc-2.html#impacted-files > > My suggestions for Proj: > 1. it should be possible to specify multiple data directories with > PROJ_LIB env variable, so that it is possible to use grids also from > user's home directory (not just the read-only system directory) That's an interesting idea. Could you file a ticket to https://github.com/OSGeo/proj.4/issues about that ? > 2. there could be a database similar to datum_shift.csv [2] that would > list well known datum shift grid files, so that QGIS does not need to > maintain its database and just pull that information out of Proj - > other projects could benefit from that as well. Sounds very much like: https://github.com/rouault/proj.4/blob/iso19111/data/sql/grid_alternatives.sql It would be good if we could utlimately get rid of QGIS srs.db and just use the future PROJ proj.db that could be used by the whole PROJ/GDAL/QGIS stack Even -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
