[GRASS-user] stream extraction from ASTER dem

[Milton Cezar Ribeiro]

 Dear all,

I have a DEM with dimensions 10,000 x 6,000. Now I need to
extract all the stream or drainage, as well as generated some
other stream/flow related features like flow direction,
stream lenght, etc.

I work on a computer with 6Gb under Vista, and the grass
version is the OSGeo4W one. But when I try to run the command
below I get one error relate to r.watershed.seg.exe:

r.watershed elevation=aster_dem stream=aster_dem_stream threshold=150 -m
memory=2048

Any idea of how to solve that?

cheers

milton
brazil=toronto
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