Field domains coming to GDAL for some drivers in 3.3.0

[rsbivand]

See OSGeo/gdal#3638 https://gdal.org/doxygen/classOGRFieldDomain.html#details https://trac.osgeo.org/gdal/ticket/5741 http://www.geopackage.org/spec/#extension_schema https://desktop.arcgis.com/en/arcmap/latest/manage-data/geodatabases/an-overview-of-attribute-domains.htm. Unsure where there are examples in the wild.

[edzer]

Cool, looks like someone finally implements support for spatially intensive / extensive variables in file formats. This could be used as the default value for the extensive argument in st_interpolate_aw. I don't see why they come up with different split and merge rules.

[jguelat]

I tried several times to recover coded domain values included within a File Geodatabase using sf but I never managed to do it. Is it something doable? I tried the same with a GeoPackage, also without success. This would be useful since some data providers often use domains (e.g. the Swiss Office of Topography). I attached 2 test datasets (one File Geodatabase and one GeoPackage) with an attribute using a coded value domain.

Thanks for your help and for all your work on sf!

testdomains.gdb.zip
testdomains.gpkg.zip