[GRASS-user] intersection of network-lines and areas

achim ak7 at jupiter.uni-freiburg.de
Mon Mar 2 08:49:19 EST 2009

...and by the way: r.water.outlet seems not to work (like I do it*). I
only get one cell as basin-area...

* e.g.
r.water.outlet drainage=dem at achim basin=r_watershed_outlettest
easting=1028401.7422125897 northing=2929575.6860815384 --overwrite

achim schrieb:
> ...but how can I query my raster-streams in r.water.outlet? I cannot
> write in all points manually. Do I have to write a script for that?
> thanks,
> achim
> Markus Metz schrieb:
>> achim wrote:
>>> Hello,
>>> I cannot find a solution for extracting those areas that are crossed by
>>> a line. And further to find out, what areas are crossed by a network of
>>> lines in order to union them into one area.
>>> Its for combining subbasins which are part of a certain rivernetwork.
>> What about r.water.outlet? You can get the exact coordinates for the the
>> outlet point from the existing river network. Best would be to use the
>> stream segments output of r.watershed as river network. That should give
>> you the one area you are looking for.
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