[GRASS-user] Display of Terrain Perameter Maps

Rich Shepard rshepard at appl-ecosys.com
Mon Mar 1 12:24:52 EST 2010

   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?


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