On Monday 01 March 2010, Rich Shepard wrote: > The output maps from r.slope.aspect. r.resamp.rst, and even r.topidx the > output maps have values for each cell rather than trends. This is very > difficult to interpret by non-technical viewers. > > I've seen maps of slopes, profile and planar curvature, and topographic > wetness indices that are more smoothly colored. If one wants to determine > the curvature of slopes adjacent to a specific cell at its base it would be > easier to see this if the values do not change with each cell. When we > stand at the foot of a hill we tend to not focus on each detail of the > terrain but the overall slope, profile curvature, and planar curvature. > It's this type of overview that I'm trying to display. > > Is there a way to get smoother output maps that are visually more > informative to non-specialists? > > Rich > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user
Hi Rich, I have found that with a certain amount of smoothing (r.param.scale , r.neighbors) and the right color scheme (r.colors [-e]) one can generate pretty nice looking maps that display overall trends. One thing to remember-- most GRASS modules are geared towards analysis-- making pretty maps comes second. Dylan -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user