v.parallel(1grass)

💖 v.parallel 💖

okay bestie, welcome to the GRASS User's Manual page for v.parallel(1grass) — yes that's the manual name, we're keeping it, it's part of the lore 🎀

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✨ NAME ✨

v.parallel — Creates parallel line to input vector lines. that's it, that's the job, and it does it gorgeously 💅

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🏷️ KEYWORDS 🏷️

vector, geometry, buffer, line

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🌈 SYNOPSIS 🌈

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

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🎀 Flags 🎀

• -r — Make outside corners round (yes bb, we're softening the edges, giving it that glowy finish 🦋)
• -b — Create buffer-like parallel lines
• --overwrite — Allow output files to overwrite existing files (let it eat, let it replace 🍓)
• --help — Print usage summary
• --verbose — Verbose module output (it WILL tell you everything, and honestly? good for her 💅)
• --quiet — Quiet module output
• --ui — Force launching GUI dialog (mouse girlies rise up 🖱️✨)

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🌸 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

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💜 DESCRIPTION 💜

v.parallel creates parallel lines to the input vector lines, which can be used as half-buffers. periodt. like it just slides a twin line right next to your original and they're both serving looks 💅✨

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👑 NOTES 👑

Usage of the -b flag will overrule the side parameter. yes, -b is the main character here, it said "my turn" and took the wheel, no cap 👑

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💀 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.

bestie this is the actual tea: inside corners act up sometimes 😭 the workaround is literally right there — reach for -b and move on with your day 🫶

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🔥 SEE ALSO 🔥

v.buffer

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🫶 AUTHORS 🫶

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

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⭐ SOURCE CODE ⭐

Available at: v.parallel source code (history)

Latest change: Friday Feb 07 19:16:09 2025 in commit: a82a39f673b97fafcfce1604dc3e6015cb96487a

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

© 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual

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and that's the whole page, bestie 🎀 this was GRASS 8.5.0, manual name v.parallel(1grass), with the latest change landing Friday Feb 07 19:16:09 2025 — go make some parallel lines, you're gonna ate 💖✨🌈