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

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

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

       vector, geometry, buffer, line

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

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

       Usage of -b flag will overrule the side parameter.

v.buffer

       Available at: v.parallel source code (history)

       Accessed: Friday Apr 04 01:20:30 2025

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

GRASS 8.4.1                                                                                   v.parallel(1grass)

v.parallelv.parallel--helpv.parallel   [-rb]   input=name    [layer=string]    output=namedistance=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: -1output=name[required]
           Name for output vector map

       distance=float[required]
           Offset along major axis in map units
           Options: 0-100000000minordistance=float
           Offset along minor axis in map units
           Options: 0-100000000angle=float
           Angle of major axis in degrees
           Default: 0side=string[required]
           Side
           Options: left,right,both
           Default: rightleft: 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