Dear Aylin,
Please post such questions to the grass-user mailing list [1], or on the relevant stack exchange forum, not privately to developers.
You can look at https://grass.osgeo.org/grass78/manuals/addons/r.roughness.vector.html to see if this corresponds to what you want. Otherwise you could probably roll your own formula with r.mapcalc, possibly combined with r.neighbors.
Moritz
Am 6. Februar 2021 19:03:29 MEZ schrieb “aylin çiftci” aylin_ciftci@hotmail.com:
Hi from Turkey,
İ am geologist, study morphotectonic and paleoseismology,
İ research grass gis for moprhotectonic analysis,
İ need surface roughness analysis on grass gis, do you help me for this analysis, a video or your researchs
Thanks for publications
Best regards
Aylin
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