Hi In proj.db there is a table "geoid_model" with the list of accepted GEOIDMODEL tags, like GEOID18, GEOID12B, OSGM15 or GGM10 (I added that last one because because it is used with NAVD88 height, for consistency)
https://github.com/OSGeo/PROJ/blob/04928472dbee772b6b31c78352dc486fb6543a91/data/sql/customizations.sql#L241 However there are many geoid grid files in PROJ-data that do not have a geoid model name there. What is the policy to set geoid models there in that table? I already have a patch for that table with many of them, like AUSGeoid2020, DNN, EGM08-REDNAP, RAF09, RAF18, NZGeoid2016 or SAGEOID2010. By the way, we use them to "know" that there is a grid file for a vertical CRS using https://proj.org/development/reference/functions.html#c.proj_get_geoid_models_from_database Does it make sense to add that to the PROJ repository? If yes, would it make sense that any new geoid grid file added in PROJ-data adds a geoid model there? See that this is the tag GEOIDMODEL in WKT2 (if I understood correctly) so it should not change "so often". I do not know how sensible it would be to changes in EPSG database. Thanks. .___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__ Entre dos pensamientos racionales hay infinitos pensamientos irracionales.
_______________________________________________ PROJ mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/proj
