Darrell writes:
s.sample version 0.8B is available at
ftp://pasture.ecn.purdue.edu/pub/mccauley/grass/s.sample.tar.gz
(for the uninitiated, this is a program to sample raster files
......
What would be the difference or advantage of using s.sample
instead of r.what with the site coordinates?
Alejandro Hinojosa
Research Associate
Earth Science Division
CICESE Ensenada, Baja California, Mexico.
voice; (01152)6674-4501 to 08 fax:(01152)6674-4933
Alejandro Hinojosa Corona (alhinc@cicese.mx) writes on 15 June 1995:
Darrell writes:
s.sample version 0.8B is available at
ftp://pasture.ecn.purdue.edu/pub/mccauley/grass/s.sample.tar.gz
(for the uninitiated, this is a program to sample raster files
......What would be the difference or advantage of using s.sample
instead of r.what with the site coordinates?
To my knowledge, r.what only does nearest neighbor sampling.
s.sample does bilinear interpolation and cubic convolution.
s.sample also computes differences between raster and site values,
which makes it a nice tool for cross-validation of interpolation
algorithms.
--Darrell
--
James Darrell McCauley, PhD http://soils.ecn.purdue.edu/~mccauley/
Agricultural & Biological Engineering mccauley@ecn.purdue.edu
Purdue University tel: 317.494.1198 fax: 317.496.1115