[GRASS-user] extract the boundary

Markus Neteler neteler at osgeo.org
Tue Mar 23 16:22:08 EDT 2010

On Tue, Mar 23, 2010 at 3:00 PM, maven apache <apachemaven0 at gmail.com> wrote:
> Hi:
> I have a raster image which contains some polygons,and now I want to extract
> the boundary of them and change the boundary to vector, how to do that?

I think that r.to.vect (f=area) and then a v.type will do that job.


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