[GRASS-user] Profile and tangential curvatures in r.slope.aspect
rez at touchofmadness.com
Tue Oct 10 16:52:09 EDT 2006
On Tue, 2006-10-10 at 16:29 +0200, Aldo Clerici wrote:
> Dear GRASSusers.
> Is there a paper (or manual, or tutorial) explaining how profile and
> tangential curvatures (pcurv and tcurv)are computed in r.slope.aspect?
> Many thanks in advance
You may refer to Helena, et. al, papers titled, "Interpolation by
Regularized Spline with Tension". They can be found on Helena's page
IIRC, it uses 3rd order finite difference weighted by reciprocal of
squared distance implemented in a 3x3 moving window.
Brad Douglas <rez touchofmadness com> KB8UYR/6
Address: 37.493,-121.924 / WGS84 National Map Corps #TNMC-3785
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