NAME

       r.tile  - Splits a raster map into tiles.

KEYWORDS

       raster, tiling

SYNOPSIS

       r.tile
       r.tile --help
       r.tile input=name output=string width=integer height=integer  [overlap=integer]   [--help]
       [--verbose]  [--quiet]  [--ui]

   Flags:
       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       input=name [required]
           Name of input raster map

       output=string [required]
           Output base name

       width=integer [required]
           Width of tiles (columns)

       height=integer [required]
           Height of tiles (rows)

       overlap=integer
           Overlap of tiles

DESCRIPTION

       r.tile retiles an existing raster map with user defined x and y tile size.

NOTES

       r.tile generates a separate raster for each tile.  This is equivalent to running  g.region
       along with r.resample in a double loop.

       The  module  can  be used to split a large raster map into smaller tiles, e.g. for further
       parallelized analysis on a cluster computing system.

       The overlap is defined in rows/columns.

EXAMPLE

       Retiling example for the North Carolina DEM:
       g.region raster=elevation -p
       # rows:       1350
       # cols:       1500
       # generating 2 x 2 = 4 tiles (width=1500/2, height=rows/2)
       r.tile input=elevation output=elev_tile width=750 height=675
       creates 4 tiles with the prefix elev_tile  (named:  elev_tile-000-000,  elev_tile-000-001,
       elev_tile-001-000, ...).

SEE ALSO

        g.region, r3.retile

AUTHOR

       Glynn Clements

       Last changed: $Date: 2016-06-26 01:33:50 +0200 (Sun, 26 Jun 2016) $

SOURCE CODE

       Available at: r.tile source code (history)

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       © 2003-2018 GRASS Development Team, GRASS GIS 7.4.0 Reference Manual