Hello, I am trying to interpolate a raster DTM from contour lines. I like the results from v.surf.rst, however, this algorithm, at least with my settings seams to generate rectangular artefacts in the resulting DTM. See a hillshade of my result at http://www.carto.net/neumann/temp/hs_dtm_tension5_smooth2.png - if it weren't for these artefacts I would like the results very much.
Here are the parameters I used: v.surf.rst input=hl layer=1 zcolumn=elev_m dmax=10 dmin=0.5 elev=dtm_tension5_smooth2 zmult=1.0 tension=5 smooth=2 segmax=40 npmin=300 --overwrite The idea is to get a smooth, not too detailed DTM, hence the small tension and higher smooth values. Are there any parameters or postprocessing steps that would help me remove these rectangular artefacts? Or alternatively, are there better methods to interpolate DTMs from contour lines? Thanks for any ideas, Andreas -- Andreas Neumann Böschacherstrasse 6, CH-8624 Grüt/Gossau, Switzerland Email: [EMAIL PROTECTED], Web: * http://www.carto.net/ (Carto and SVG resources) * http://www.carto.net/neumann/ (personal page) * http://www.svgopen.org/ (SVG Open Conference) * http://www.geofoto.ch/ (Georeferenced Photos of Switzerland) _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser
