[GRASS-user] Re: [beginner][r.to.vect] -v? polygonizing only white parts of an image

[Hamish]

baobazz wrote:
> Just one question:
> r.describe rasterThin gave me
> >* 1
> Did "*" mean "everything else than 1" or everything?
> Why did I get a blank/NULL map?

"*" means NULL values. see the help page-
  http://grass.osgeo.org/grass64/manuals/html64_user/r.describe.html


Hamish