There is some methodology where it is possible extract the drainage network and maintain the correct graph orientation? I verified that the operation of the extracted drainage with “flow accumulation” command and converted to vector does not represent the correct way that water runs along the river, some pieces are in the opposite direction.
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
On Tue, Jan 24, 2012 at 8:03 PM, Mark Seibel <mseibel@gmail.com> wrote:
Hi,
On Tue, Jan 24, 2012 at 1:24 PM, Marcello Benigno
<benigno.marcello@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
Yes, the stream lines in the vector output of r.stream.extract are
directed downstream.
Is there any way to run this script in a non compiled version? My grass version was installed via apt-get and I don´t know if it’s a good idea to keep two versions in the same computer, is it better uninstall the previous one?