[GRASS-user] buffer on granular polygon... it fails

[Nikos Alexandris]

On Wed, 2008-03-12 at 19:08 -0700, Hamish wrote:
> > Hamish wrote:
> > > v.buffer has some problems,
> > >   http://trac.osgeo.org/grass/ticket/90
> > > 
> > > It's not a perfect solution but maybe try v.to.rast + r.buffer +
> > > r.to.vect ?
> 
> Nikos: 
> > In general I try to avoid rasterising of vectors, do something and
> > then vectorise back.
> 
> it's not a great solution, but it is perhaps better than having output
> with incorrect gaps.
> 
> 
> > It's off topic but I have a question: what's
> > the deal concerning loss off information/ distortion etc. ? On which
> > factors it depends most? Resolution?
> 
> resolution + rasterization method.
> 
> you can minimize resolution issues by making the resolution as fine as
> practicable; see the v.to.rast module help page for information on the
> different methods depending on feature type.
> 
> 
> Hamish

Thank you Hamish!