r.tile(1grass) GRASS GIS User's Manual r.tile(1grass)
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 [over-
lap=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
SOURCE CODE
Available at: r.tile source code (history)
Accessed: unknown
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GRASS 7.8.7 r.tile(1grass)
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