Wednesday, 27 April 2016

raster - Joining 2D polylines and DEM into 3D polylines using QGIS/GRASS/SAGA?


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.




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