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v.to.lines(1grass) Grass User's Manual v.to.lines(1grass)

v.to.lines - Converts vector polygons or points to lines.

vector, geometry, area, line, point

v.to.lines
v.to.lines --help
v.to.lines input=name output=name [method=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui]


Allow output files to overwrite existing files

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog


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

Name for output vector map

Method used for point interpolation
Options: delaunay
Default: delaunay

v.to.lines converts vector polygons (boundaries) to lines as well as vector points to lines via triangulations.

v.to.lines is able to convert point data (via triangulation) and areas to lines (via boundary to line conversion). This script is a wrapper script to v.category, v.delaunay, and v.edit.

In order to convert an ordered list of coordinates (ASCII table with x,y[,z] coordinates) into vector lines, use v.in.lines.

The examples are for the North Carolina sample dataset location:

v.to.lines input=boundary_municp output=boundary_municp_lines


v.to.lines input=geodetic_pts output=geodetic_pts_lines

v.category, v.delaunay, v.edit, v.in.lines, v.to.points, v.type

Luca Delucchi, Fondazione Edmund Mach

Last changed: $Date: 2015-01-07 21:51:53 +0100 (Wed, 07 Jan 2015) $

Available at: v.to.lines source code (history)

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© 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual

GRASS 7.6.0