[GRASS-user] sum one raster map conditional on another raster map

[stephen sefick]

I would like to sum all of the positive values of one raster map
(NDVI) based on a raster containing many watersheds that have values
1-22.  Is there a way to do this in GRASS?  Or a way to export this
information to R and get the same results.  I hope this is clear
enough.
thanks,

-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis