[GRASSLIST:8279] Re: masking a portion of a raster layer "by hand"

[Ian MacMillan]

Try r.digit to make a raster by hand.  Then name that raster MASK.

-Ian

On Sep 14, 2005, at 8:22 AM, Jason Horn wrote:

> Does anyone know of a way to create a mask for a raster layer using 
> the mouse?  I'd like to mask off areas of interest in raster layers 
> that are determined by visual observation.
>
>
 >
 >
What happens if a big asteroid hits Earth? Judging from realistic 
simulations involving a sledge hammer and a common laboratory frog, we 
can assume it will be pretty bad.
  - Dave Barry


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