Length of drainage network

Angus Carr apcarr at FLASH.LakeheadU.CA
Mon May 5 11:54:07 EDT 1997


On Mon, 5 May 1997, Ezzeddine Sdiri wrote:
> I have streams map which is an output of r.watershed program. How can I find
> the length of drainage network to determine drainage density of the watershed
> from this map?

If drainage density is #stream pixels/watershed, then you can use r.mask
to find stream components in each watershed, and then use r.stats to give
you a cell or area count.

If I'm off in left field, drop me a note.

Angus.



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