[GRASS-user] distance along flow line to a particular feature
godard at mailhost.geologie.ens.fr
Mon Aug 7 09:41:10 EDT 2006
Hi Grass users,
I am quite new to Grass and I come here to get some hints and guidelines about
a particular problem I have.
I work on a watershed (on which I ran r.watershed, to get flow directions,
accumulation...) and inside this watershed I define a linear feature (raster
or vector) as the main stream.
I would like to calculate the distance (along the hydrographic network) of
each pixel of this watershed to the main stream. By distance I mean lenght
calculated along the flow lines defined by the flow directions. The desired
final output is a raster containing that distance to the main stream.
Has anybody done such a thing with Grass previously?
Thanks in advance,
Equipe de géodynamique
Laboratoire de Géologie
École Normale Supérieure
24, Rue Lhomond
75231 Paris Cedex 05, France
Tel: +33 1 44 32 22 63 Fax: +33 1 44 32 20 00
email: godard at geologie.ens.fr
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