[GRASS-user] Stream flow direction map

[Nikos Alexandris]

On Saturday 01 of May 2010 09:12:21 Achim Kisseler wrote:
> On 01.05.2010 07:46, Jarek Jasiewicz wrote:
> > Interested question, but I think the easiest answer is carving or stream
> > burining (r.stream.carve). Next reproduce r.watershed or
> > r.stream.extract you shall receive (almost) ideally confidential network
> > with supplied
> > HTH
> > Jarek
> 
> Hi Nikos,Jarek,
> 
> Stream burning: Thats what I thought about.

Thanks guys, I'll be testing this quickly (or just pass the information to the 
friend (uses Arc-something-9.3).

> Further I suggest to weight the DEM with the contour information.
> A guess how this could be done:
> v.to.rast contourmap
> r.fillnulls (to interpolate between contour lines raster map)?
> r.mapcalc dem*contourrast
> then r.watershed

Yep, I had the same feeling about it (since there is high resolution info 
available, there must be a way to use it) but was unsure about the approach.

Thanks Achim ;-)

Nikos