[GRASSLIST:10588] Re: Stream network in GRASS?

Dylan Beaudette dylan.beaudette at gmail.com
Sun Feb 26 12:12:41 EST 2006


Hi,

Check out r.terraflow --> reclass the topographic index output map.
See example here:
http://casoilresource.lawr.ucdavis.edu/drupal/node/166

Also try:
r.flow
r.topmodel

Dylan

On 2/26/06, Stefano Costa <steko at iosa.it> wrote:
> Scrive Jonathan Greenberg <jgreenberg at arc.nasa.gov>:
> >       Thanks!  I was playing with r.watershed today, and running it on a
> > tutorial DEM from the DHSVM hydro modeling toolkit was resulting in the
> > streams output from r.watershed (which I'm assuming I would use to create
> > the vector) had values for every cell, not just the valley/stream cells.  Is
> > there a way to have a grid of only "river" cells, not all flowlines created
> > from the dem?
>
> Just play with r.reclass until you can separate cell values into river/non-river
> classes. That should be easy.
>
> Regards,
> Steko
>
> --
> Stefano Costa
> http://www.iosa.it * Software Libero per l'Archeologia
> Jabber: steko at jabber.linux.it
>
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