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
r.tile retiles an existing raster map with user defined
x and y tile size.
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.
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, ...).
g.region,
r3.retile
Glynn Clements
SOURCE CODE
Available at:
r.tile source code
(history)
Latest change: Sunday Oct 20 16:02:11 2024 in commit: e523163b16c24df62d23c7e5bf149846ae2d42d1
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GRASS Development Team,
GRASS GIS 8.5.0dev Reference Manual