Hi Stefan, thanks your response.
>If you think of valleys in a hydrological perspective I would have a look at r.stream. modules for having a kind of threshold above streams (in m), and then use r.grow.distance for an inverted valley representation. >If you think of valleys in a geomorphometric context things might be a bit more complex (esp. for U-valleys, compared to V-valleys). it's maybe a mixing of both... ;-) given is a habitat typical for gravel beds/braided river in mountain regions. it seems the probability of the occurrence of the needed habitat structure is greater in wider valleys floors than in narrow valley floors, and greater in U-valleys than in V-valleys. the idea is to get some measure/index to handle this probability ... ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/calculation-valley-floor-width-in-GRASS-or-some-index-indicating-valley-floor-width-tp5132402p5132410.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
