[postgis-users] what about 3d-srids
felix-kunde at gmx.de
Sun Apr 1 14:05:38 PDT 2012
i was wondering how 3D referencing systems will be handled in the future in PostGIS? When 3D-Datatypes, -Indexes, -Functions are introduced to the PostGIS-World why are no 3D-srids delivered in the spatial_ref_sys by default?
I know that there are insert-stmts out there (spatialreference.org), but it seems to me, as there hasn't been much of a discussion around it yet, nobody knows what to do with it. I myself don't know much about 3d-crs. I could imagine they are more precise etc.
The reason I'm asking is because I have recently ported a CityGML-Database with Import/Export-tool from Oracle to PostGIS (in the context of my Master Thesis), and on the oracle-side, the use of 3D-datatypes and 3D-indexes is restricted to 3d-srids. A bit of a pain but it also makes sense to me. So back to my first question: What is the PostGIS-team (or other users) thinking about the implementation and usage of 3D-crs?
NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone!
Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a
More information about the postgis-users