v.type.1grass - Man Page

Changes type of vector features.

Keywords

vector, geometry, editing, area, line, point

Synopsis

v.type
v.type --help
v.type input=name  [layer=string]  output=name from_type=string to_type=string  [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

Flags

--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

input=name [required]

Name of input vector map
Or data source for direct OGR access

layer=string

Layer number or name (’-1’ for all layers)
A single vector map can be connected to multiple database tables. This number determines which table to use. When used with direct OGR access this is the layer name.
Default: -1

output=name [required]

Name for output vector map

from_type=string [required]

Feature type to convert from
Options: point, line, boundary, centroid, face, kernel
Default: line

to_type=string [required]

Feature type to convert to
Options: point, line, boundary, centroid, face, kernel
Default: boundary

Description

v.type changes the type of geometry primitives.

The following vector object types are defined in GRASS GIS:

Lines and boundaries can be composed of multiple vertices.

Area topology also holds information about isles. These isles are located within that area, not touching the boundaries of the outer area. Isles are holes inside the area, and can consist of one or more areas. They are used internally to maintain correct topology for areas.

Examples

Convert lines to area boundaries

v.type input=map_l output=map_b from_type=line to_type=boundary

In order to create areas, centroids must be added with v.centroids.

See Also

v.centroids, v.to.points

Author

Radim Blazek, ITC-Irst, Trento, Italy

Source Code

Available at: v.type source code (history)

Latest change: Thursday Oct 10 20:41:09 2024 in commit: def7a1af728ed34f459f5fe474fab4657f5d277e

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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

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GRASS 8.4.1 GRASS GIS User's Manual