[GRASSLIST:7579] Re: Interior Buffers

[Gordon Keith]

On Mon, 18 Jul 2005 00:35, Dave Sampson wrote:
> using r.buffer how might I perform an interior buffer. That is take the
> outside of a raster clump (from r.clump) and make concentric internal
> buffers at 100, 200, 300 meters etc?.

have you tried:
r.mapcalc outside='if(isnan(clump),1,nan())'

then using r.buffer on outside?

Regards
Gordon

-- 

Gordon Keith
Programmer/Data Analyst
Marine Acoustics
CSIRO Marine and Atmospheric Research
http://www.cmar.csiro.au

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