NAME¶
r.resample - GRASS raster map layer data resampling capability.
KEYWORDS¶
raster, resample
SYNOPSIS¶
r.resample
r.resample help
r.resample [-
q]
input=
string
output=
string [--
overwrite] [--
verbose]
[--
quiet]
Flags:¶
- -q
-
Quiet
- --overwrite
-
Allow output files to overwrite existing files
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- input=string
-
Name of an input layer
- output=string
-
Name of an output layer
DESCRIPTION¶
r.resample resamples the data values in a user-specified raster input map
layer
name (bounded by the current geographic region and masked by the
current mask), and produces a new raster output map layer
name
containing the results of the resampling. The category values in the new
raster output map layer will be the same as those in the original, except that
the resolution and extent of the new raster output map layer will match those
of the current geographic region settings (see
g.region).
r.resample is intended for reinterpolation of continuous data to a
different resolution rather than for interpolation from scattered data (use
the
v.surf.* modules for that purpose).
NOTES¶
The method by which resampling is conducted is "nearest neighbor" (see
r.neighbors). The resulting raster map layer will have the same
resolution as the resolution of the current geographic region (set using
g.region).
The resulting raster map layer may be identical to the original raster map
layer. The
r.resample program will copy the color table and history
file associated with the original raster map layer for the resulting raster
map layer and will create a modified category file which contains description
of only those categories which appear in resampled file.
When the user resamples a GRASS
reclass file, a true raster map is
created by
r.resample.
SEE ALSO¶
g.region,
r.mapcalc,
r.mfilter,
r.neighbors,
r.rescale
AUTHOR¶
Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
Last changed: $Date: 2008-05-16 21:09:06 +0200 (Fri, 16 May 2008) $
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