On Mon, Aug 14, 2023 at 9:46 PM Michael Barton <michael.bar...@asu.edu> wrote: > > Perito, > > I don't know where you are getting your points file. But here are some > suggestions. > > Often stepped DEMs are a result of someone starting with a scanned or vector > contour map and then transforming that to a DEM using somewhat > unsophisticated algorithms. So how to get rid of these. > > You can create a a file of points by generating random points (v.random) and > assigning them elevation values from your DEM. Then you can use an > interpolation algorithm like v.surf.rst or v.surf.bspline. Random points can > help get rid of the steps. The fewer points, the smoother the DEM. More > points will provide more topographic detail but may also show up some steps.
In addition: you find an overview (interpolation and resampling) here: https://grasswiki.osgeo.org/wiki/Interpolation Markus _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
