r.tile.1grass man page

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.

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: 2014-12-19 22:55:37 +0100 (Fri, 19 Dec 2014) $

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GRASS 7.0.4 Grass User's Manual