Hi I already tried the saga and grass tools via Processing framework. They are really powerfull, but also really complicated in my opinion. Hard to find the correct algo, the correct treshold, necessity to manually vectorize the produced watershed raster (I have surely missed something here...), etc. I am surely not an hydrology expert, but I am convinced that we could create a full processing model wich let humble users do the job. Any pointers to documentation or examples would be apreciated if anyone know some (I searched "grass catchment basin" or other keywords and could not find a step by step procedure adapted to "beginners")
Michael 2013/11/25 Alexander Bruy <alexander.b...@gmail.com> > Hi Rob, > > you can try to do this with Processing framework. There is > at least three different providers that have watershed analysis > tools: GRASS, SAGA and TauDEM > > 2013/11/24 Rob Stewart <rstew...@hydrologyandwater.com.au>: > > Hi, > > What's the best way to do a simple watershed analysis on a raster grid? > I'm > > wanting to generate rainfall/runoff sub-catchment polygons. > > Rob > > > > > > _______________________________________________ > > Qgis-user mailing list > > Qgis-user@lists.osgeo.org > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > -- > Alexander Bruy > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user >
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