r.tile(1grass)
| 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
[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
SOURCE CODE
Available at: r.tile source code (history)
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© 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual
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