I have a road network in 2D/PostGIS and a DEM. I want to turn the road network into 3D by retrieving the Z-value from the DEM.
Both files are quiet large so an efficient process is needed. I'd prefer to use QGIS or any other open source tool.
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.Sign up to join this community
For that, you can use
Python in the Python console with