Hi guys, sorry for my delay. I am trying your suggestions.
cheers milton 2009/11/14 Rich Shepard <rshep...@appl-ecosys.com> > On Sat, 14 Nov 2009, Milton Cezar Ribeiro wrote: > > I have a DEM, a drainage and a Cover mapa, and I need to estimate - for >> ANY pixel of my drainage - what is the amount of my cover classes that >> "contribute" (or are upstream) of that pixel. >> > > milton, > > Not all my data are imported and defined to the critical area so I cannot > offer direct experience. However, Single Flow Direction (SFD, D8) moves > flow > into a single downslope cell and is used by r.watershed and r.terraflow. > D-infinity, or vector grid approach, is used by r.flow. Multiple Flow > Directions (MFD, what you probably want to use) partitions the flow into > two > or more downslope directions and is used by r.terraflow, r.topmodel, and > r.mapcalc flow implementation in the r.mapcalc tutorial. Also check out > r.hydro.CASC2D. > > HTH, > > Rich > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user >
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