NAME

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

KEYWORDS

       raster, resample, nearest neighbor

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

SOURCE CODE

       Available at: r.resample source code (history)

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       © 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual