Building mask from vector file

[Rick Thompson]

Yes, you can label the polygon in v.digit, v.support it, then use v.to.rast
in=name out=name2. Ensure that the resolution is what you want it to be before
using v.to.rast. You can use r.mask then on the raster file.
 
> I have a polygon described in a vector file, and want to build a mask from it
> so that I can mask out cells in raster files that are outside of the polygon.
> Does anyone have ideas on this?
------------------------------------------------------------------------
Rick Thompson-   Research Assistant           E-mail: rick at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-5736
Ozark Hall Rm. 12                             Fax: 575-3846 
University of Arkansas              
Fayetteville, AR 72701