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NAME

       r.resample  - GRASS raster map layer data resampling capability.

KEYWORDS

       raster, resample

SYNOPSIS

       r.resample
       r.resample --help
       r.resample  input=string  output=string   [--overwrite]   [--help]  [--verbose]  [--quiet]
       [--ui]

   Flags:
       --overwrite
           Allow output files to overwrite existing files

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       input=string [required]
           Name of an input layer

       output=string [required]
           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
       resampling of discrete raster data (such as  land  cover,  geology  or  soil  type)  to  a
       different  resolution.  Continuous data (such as elevation or temperature) usually require
       reinterpolation when changing resolution, see r.resamp.interp.

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, r.resamp.interp

       Overview: Interpolation and Resampling in GRASS GIS

AUTHOR

       Michael Shapiro, U.S.Army Construction Engineering Research Laboratory

       Last changed: $Date: 2016-08-03 13:50:26 +0200 (Wed, 03 Aug 2016) $

SOURCE CODE

       Available at: r.resample source code (history)

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       © 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual