r.tile.1grass - Man Page
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)
Accessed: Tuesday Mar 19 11:02:03 2024
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