Scroll to navigation

v.parallel(1grass) GRASS GIS User's Manual v.parallel(1grass)

NAME

v.parallel - Creates parallel line to input vector lines.

KEYWORDS

vector, geometry, buffer, line

SYNOPSIS

v.parallel
v.parallel --help
v.parallel [-rb] input=name [layer=string] output=name distance=float [minordistance=float] [angle=float] side=string [tolerance=float] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:


Make outside corners round

Create buffer-like parallel lines

Allow output files to overwrite existing files

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

Parameters:


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

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

Name for output vector map

Offset along major axis in map units
Options: 0-100000000

Offset along minor axis in map units
Options: 0-100000000

Angle of major axis in degrees
Default: 0

Side
Options: left, right, both
Default: right
left: Parallel line is on the left
right: Parallel line is on the right
both: Parallel lines on both sides

Tolerance of arc polylines in map units
Options: 0-100000000

DESCRIPTION

v.parallel creates parallel lines to the input vector lines which can be used as half-buffers.

NOTES

Usage of -b flag will overrule the side parameter.

KNOWN ISSUES

There is a problem with side-offset parallel line generation for inside corners. To avoid this problem, the -b flag might be used.

SEE ALSO

v.buffer

AUTHORS

Radim Blazek
Rewritten by Rosen Matev (with support through the Google Summer of Code program 2008)

SOURCE CODE

Available at: v.parallel source code (history)

Accessed: Sunday Jan 22 07:37:10 2023

Main index | Vector index | Topics index | Keywords index | Graphical index | Full index

© 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual

GRASS 8.2.1