NAME
r.region - Sets the boundary definitions for a raster map.
KEYWORDS
raster
SYNOPSIS
r.region
r.region help
r.region [-cd] map=name [region=name] [raster=name] [vector=name] [3dview=name] [n=value] [s=value] [e=value] [w=value] [align=name] [--verbose] [--quiet]
Flags:
- -c
- Set from current region
- -d
- Set from default region
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- map=name
- Raster map to change
- region=name
- Set region from named region
- raster=name
- Set region to match this raster map
- vector=name
- Set region to match this vector map
- 3dview=name
- Set region to match this 3dview file
- n=value
- Value for the northern edge (format dd:mm:ss{N|S})
- s=value
- Value for the southern edge (format dd:mm:ss{N|S})
- e=value
- Value for the eastern edge (format ddd:mm:ss{E|W})
- w=value
- Value for the western edge (format ddd:mm:ss{E|W})
- align=name
- Raster map to align to
DESCRIPTION
The r.region program allows the user to manage the boundaries
of a raster map. These boundaries can be set by the user directly
and/or set from a region definition file (stored under the
windows directory in the user's current mapset), a raster
or vector map, or a 3dview file.
The align parameter allows to set the current resolution equal to
that of the named raster map, and align the boundaries to a row and column
edge in the named map. Alignment only moves the existing boundaries outward
to the edges of the next nearest cell in the named raster map -- not to the
named map's edges. To perform the latter function, use the
raster=name option.
NOTES
After all updates have been applied, the raster map's resolution
settings are recomputed from the boundaries and the number of rows and
columns in the raster map.
The n=value may also be specified as a
function of its current value: n=n+value
increases the current northing, while n=n-value
decreases it. This is also true for s=value,
e=value, and w=value.
EXAMPLES
Assign absolute coordinates to map:
r.region map=mymap n=220750 s=220000 w=638300 e=639000
r.region map=mymap n=n+100 e=e+100 w=w+100 s=s+100
SEE ALSO
r.support
g.region
AUTHOR
Glynn Clements
Based upon g.region
Last changed: $Date: 2009-05-01 03:24:06 -0700 (Fri, 01 May 2009) $
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