do resolution changes effectively average data ?
James Darrell McCauley
mccauley at ecn.purdue.edu
Wed Jan 18 13:49:01 EST 1995
Malcolm Williamson (malcolm at cast.uark.edu) writes on 18 Jan 95:
>GRASS resamples based on the value of the center cell. If there is no center
>cell (as in your example), it would take the value of the upper-left cell
>out of the center four, *not* the upper-left cell of the 10 x 10 block.
see also ftp://pasture.ecn.purdue.edu/pub/mccauley/grass/s.sample.tar.gz
and http://soils.ecn.purdue.edu/~aggrass/html4/s.sample.html for info on
sampling rasters at site locations using nearest neighbor, bilinear
interpolation, and cubic convolution.
James Darrell McCauley, USDA National Needs Fellow
Agric Engineering, Purdue University, West Lafayette, IN 47907-1146, USA
mccauley at ecn.purdue.edu +++ http://soils.ecn.purdue.edu/~mccauley/
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