[GRASS-user] intersection of network-lines and areas
markus.metz.giswork at googlemail.com
Mon Mar 2 10:59:47 EST 2009
> I attach an example-jpg to illustrate my point of view...
OK, I think I understand.
You could get the start points with r.mapcalc
r.mapcalc "start_points = if(!isnull(stream_segments) && drainage < 0,
convert the start points to vector
r.to.vect in=start_points out=start_points feature=point
get coordinates for each point with v.to.db map=start_points -p option=coor
ideally pipe the output of v.to.db to something that generates a script
to call r.water.outlet with each set of coords, otherwise it's manual
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