v.parallel - Creates parallel line to input vector lines.
NAME KEYWORDS SYNOPSIS Flags: Parameters: DESCRIPTION NOTES KNOWN ISSUES SEE ALSO AUTHORS SOURCE CODENAME
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:
|
−r |
Make outside corners round
|
−b |
Create buffer−like parallel lines
−−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
distance=float [required]
Offset along major axis in map
units
Options: 0−100000000
minordistance=float
Offset along minor axis in map
units
Options: 0−100000000
angle=float
Angle of major axis in degrees
Default: 0
side=string [required]
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=float
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)
Latest change: Thursday Jan 26 14:10:26 2023 in commit: cdd84c130cea04b204479e2efdc75c742efc4843
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