On Tue, Sep 13, 2016 at 7:58 AM, Helmut Kudrnovsky <[email protected]> wrote: > georges wrote >> Hello, >> >> I would like to know whether raster curvature analysis in GRASS >> is Gaussianor Mean curvature analysis? >> https://en.wikipedia.org/wiki/Gaussian_curvature >> https://en.wikipedia.org/wiki/Mean_curvature >> >> This GRASS 7.2 manuals page mentions that raster curvature analysis can be >> conducted in direction of steepest slope and in the direction of the >> contour tangent, therefor distinguishing two curvature options: profile >> and tangential. >> >> Still are these two Gaussian or Mean curvatures? >> >> Thank you for the reply. > > I can't tell you directly which algorithm is used. > > fortunately GRASS GIS is open source; so maybe have a look at the source > code to check: > > r.slope.aspect: > > https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.slope.aspect/main.c > > or > > r.resamp.rst > > https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.resamp.rst/main.c > > HTH
also r.param.scale: https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.param.scale/ > > > > ----- > best regards > Helmut > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/GRASS-raster-curvature-analysis-type-tp5285498p5285523.html > Sent from the Grass - Users mailing list archive at Nabble.com. > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
