Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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
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.
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.
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
r.support,
g.region,
v.transform
Glynn Clements
Based upon
g.region
SOURCE CODE
Available at:
r.region source code
(history)
Latest change: Thursday Dec 22 12:39:52 2022 in commit: b5a70ba2c4d3115656baa764ff51a31bd5a8db19
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© 2003-2024
GRASS Development Team,
GRASS GIS 8.3.3dev Reference Manual