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

Last changed: $Date$