Just a quick idea - if vector map contains only rivers, You could try out v.to.rast and then r.thin till You get something similar to river and then convert back to vectors with r.to.vect.
Report, if it works. Maris. 2008/1/24, Gabriele Nolè <[EMAIL PROTECTED]>: > > Ah, :-( > > I do not think there is anything alternative. > > I will be careful if you solve this problem. > However thanks > > Gabriele > > > > > > On 24.01.2008 14:03, Gabriele N. wrote: > > > I would locate the midline of the river. > > > So I would like to transform the polygon with the middle line. > > > > > > > Ah now I get it. Unfortunately v.generalize doesn't support merging > > (yet). Also I don't have time to work on that at the moment. Daniel > > would you have time to implement this? > > > > --Wolf > > > > -- > > > > <:3 )---- Wolf Bergenheim ----( 8:> > > > > > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user >
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