[GRASS-user] Snapping river segments

[Carlos "Guâno" Grohmann]

Perhaps v.to.db to add the length of each segment to the database, and
then v.extract? or SQL thru gis.m to create a new map?

Carlos



On 3/22/07, Colin Nielsen <colin.nielsen at mail.mcgill.ca> wrote:
> With over to 10,000 river segments that isn't exactly a practical
> solution for me. Anything else?
>
> On 3/22/07, Jarek Jasiewicz <jarekj at amu.edu.pl> wrote:
> > Colin Nielsen napisał(a):
> > > I'm trying to extract only the largest rivers from a very detailed
> > > hydrology map (mostly for display purposes). Right now the map just
> > > looks black with lines. I've managed to use v.extract for areas but
> > > since the rivers are in segments i can't use v.extract for lengths.
> > > I've tried v.clean snap but it doesn't seem to be doing what I want it
> > > to. Any advice?
> > >
> > > -Colin
> > >
> > > _______________________________________________
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> > > grassuser at grass.itc.it
> > > http://grass.itc.it/mailman/listinfo/grassuser
> > for now (with my previous experiences with exactly the same problem)
> > v.digit seems to be the fastest solution :(
> >
>
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-- 
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
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