[GRASSLIST:10824] other methods for calculate profile and plan curvature

[Carlos "Guâno" Grohmann]

Hello all.

I have just resampled a SRTM DEM using krigging (in R) and did the
same with RST. The maps are very similar. When I resampled
(interpolated) the DEM with RST, I can choose to derive maps for plan
and tangencial curvature (among others) at the same time, and so I
did.
For the map interpolated with krigging, I have to derive curvatures
using r.slope.aspect.
While the DEMs are very similar, derivative maps don't. Curvature maps
calculated with r.slope.aspect have lots of artifacts, while those
from rst are much more smooth.

So, I want to ask how I can calculate these curvatures in another way
(r.mapcalc?)? I'd like to use the same method over both DEMs.

thanks

Carlos


--
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
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