Hi,
I followed the GRASS GIS commands J. Jasiewicz used
in his r.fuzzy paper to extract the streams as rasters
from the spearfish dataset.
What I did so far:
r.watershed -f --overwrite elevation=elevation.10m@PERMANENT accumulation=accum
r.mapcalc accum_abs=abs(accum)
r.stream.extract --overwrite elevation=elevation.10m@PERMANENT threshold=200
stream_rast=stream
Now I'd like to select only one of all drainage networks (watershed). I am
interested in the right network of the two main river networks in spearfish
Is there an easy way to get only that main watershed into a new map? I thought
about identifying it via the main outflow pourpoint at 602140|4927950...
Any suggestions?
Best regards,
Johannes
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