r.region(1grass) GRASS GIS User's Manual r.region(1grass)
NAME
r.region - Sets the boundary definitions for a raster map.
KEYWORDS
raster, metadata, geometry
SYNOPSIS
r.region
r.region --help
r.region [-cda] map=name [region=name] [raster=name] [vector=name]
[n=value] [s=value] [e=value] [w=value] [align=name] [--help]
[--verbose] [--quiet] [--ui]
Flags:
-c
Set from current region
-d
Set from default region
-a
Auto-adjustment for lat/lon
Attempt to fix small precision errors in resolution and extents
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
map=name [required]
Name of raster map to change
region=name
Set region from named region
raster=name
Set region to match this raster map
vector=name
Name of vector map
Set region to match this vector map
n=value
Value for the northern edge
s=value
Value for the southern edge
e=value
Value for the eastern edge
w=value
Value for the western edge
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 sets 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 set-
tings 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
Shift map (using offset, here by +100 map units in the NS direction,
-50 in the EW direction):
r.region map=mymap n=n+100 e=e-50 w=w-50 s=s+100
SEE ALSO
r.support, g.region, v.transform
AUTHOR
Glynn Clements
Based upon g.region
SOURCE CODE
Available at: r.region source code (history)
Accessed: unknown
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GRASS 7.8.7 r.region(1grass)
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