v.in.region(1)

NAME
v.in.region - Creates a vector polygon from the current region extent.

KEYWORDS
vector, geometry

SYNOPSIS
v.in.region
v.in.region --help
v.in.region [-d] output=name [type=string] [cat=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

  Flags:

-d
    Densify lines using region resolution

--overwrite
    Allow output files to overwrite existing files

--help
    Print usage summary

--verbose
    Verbose module output

--quiet
    Quiet module output

--ui
    Force launching GUI dialog

  Parameters:

output=name [required]
    Name for output vector map

type=string
    Select type: line or area
    Options: line, area
    Default: area

cat=integer
    Category value
    Default: 1

DESCRIPTION
v.in.region creates a new vector map from current region extent.

If the output of v.in.region is to be used for raster reprojection, the -d flag should be used after setting the region to the raster map to be reprojected with r.proj.

EXAMPLE
The example is based on the North Carolina sample data location. To create a bounding box vector map based on a raster map, the computational region is first set to the raster map. Then a vector bounding box is created based on the actual computational region (in this case precisely reflecting the pixel geometry of the raster map), resulting in a new vector polygon:

g.region raster=soils_Kfactor -p
v.in.region output=soils_Kfactor_bbox
v.info map=soils_Kfactor_bbox

SEE ALSO
g.region, r.proj, v.info

AUTHOR
Radim Blazek

SOURCE CODE

Available at: v.in.region source code (history)

Accessed: Wednesday Jun 03 04:20:29 2026

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