I have extracted nodes from a line shapefile. On these nodes, I have extracted altitude values from a raster DEM using SAGA 'Add raster value to point'.
I want now to make the inverse of the first operation, i.e. getting the original lines again, but with the new altitude on each of their points (so stored in the
I obviously can't make a join on attributes. And a union doesn't keep the fields of the points.
How would you do that, if it's possible?