Hi, čt 7. 11. 2019 v 15:17 odesílatel Markus Metz <markus.metz.gisw...@gmail.com> napsal: > PROJ 6 support is not yet finished in GRASS. Currently it sort of works in > master and relbr78, but I expect troubles because GRASS is heavily relying on > deprecated proj strings as CRS definitions. This is becoming problematic e.g. > when creating locations from GDAL/OGR datasets because GRASS goes from OGR > spatialreference through proj string to GRASS definition.
OSGeo4W packages are planned to be switched to GDAL3/PROJ6 soon, are you aware of any known bugs? > For GDAL 3 + PROJ 6, GRASS should switch to WKT as main CRS definition > format, ideally also storing a WKT definition next to PROJ_INFO. When > creating locations from GDAL/OGR datasets, GRASS should go from OGR > spatialreference through WKT to GRASS definition, and probably use the new > PROJ6+ methods as much as possible. Yes, good topic for https://grasswiki.osgeo.org/wiki/GRASS_GIS_Community_Sprint_Prague_2019 :-) > When getting the projection info of a GRASS location, GRASS should then check > in that order 1) WKT, 2) EPSG or other SRID, 3) GRASS native definition > (which deviated from proj definition some decades ago). > > That means, g.proj, r.in.gdal, r.external, v.in.ogr, v.external need updates, > and the mechanism of conversion between different formats of CRS definitions > in lib/proj needs to be largely rewritten. This task for next stable GRASS release (7.10?) I guess. Ma -- Martin Landa http://geo.fsv.cvut.cz/gwiki/Landa http://gismentors.cz/mentors/landa _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-dev
