[GRASS-user] extract drainage in the right direction

[Mark Seibel]

Hi,

On Tue, Jan 24, 2012 at 1:24 PM, Marcello Benigno <
benigno.marcello at gmail.com> wrote:

> Hi All,
>
> There is some methodology where it is possible extract the drainage
> network and maintain the correct graph orientation?
>

Regrettably, I cant say for sure, but I would be surprised if the vector
stream/drainage network output from r.stream.extract did not orientate
vector directions downstream properly.
http://grass.osgeo.org/wiki/GRASS_AddOns#r.stream.extract

Mark
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