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

2010-05-26 Thread baobazz
Hello, I'm a beginner in GRASS but hope to master it someday it looks infinite in terms of possibilities I'm trying to polygonize a raster. this raster is in black and white. I want to polygonize only the white parts of the image. I noticed that r.to.vect had a -v option allowing to polygonize

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

2010-05-26 Thread Hamish
baobazz wrote: > I'm trying to polygonize a raster. > this raster is in black and white. > > I want to polygonize only the white parts of the image. > > I noticed that r.to.vect had a -v option allowing to polygonize certain > parts of an image. Is it this option that I must use to vectorize the