[GRASS-user] r.to.vect and then v.clean using tool=rmarea createspolygons instead of holes.

[Moskovitz, Bob]

Thank you Hamish...your set of commands worked great!

It still bothers me that r.to.vect would produce invalid topology.  Btw, I also tried to use v.generalize but my vectyor seem to lose its attribute table.

> -----Original Message-----
> From: Hamish [mailto:hamish_b at yahoo.com]
> Sent: Friday, December 12, 2008 1:17 AM
> To: Alex Mandel; Moskovitz, Bob
> Cc: Grass-User (E-mail)
> Subject: RE: [GRASS-user] r.to.vect and then v.clean using tool=rmarea
> createspolygons instead of holes.
> 
> 
> Bob Moskovitz wrote:
> > I followed your suggestion, but I'm still getting the
> > same problem.  It seems strange that v.to.rast would create
> > a vector file that has flawed topology.  Do you know of any
> > alternative to v.clean with rmarea?
> 
> v.db.addcol area
> v.to.db option=area
> v.extract where="area > 2800"
> ?
> 
> 
> > Btw, I also tried to use v.generalize with a very small
> > threshold and then v.clean.  This method works for me.
> 
> 
> Hamish
> 
> 
> 
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> 
>