v.lrs.label(1grass)

✨ NAME ✨

v.lrs.label — bestie, this is the GRASS module that creates stationing from input lines, and linear reference system. It's part of the GRASS User's Manual, and it's giving mapping-genius energy 💅

🏷️ KEYWORDS 🏷️

vector, linear reference system, network

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🌸 SYNOPSIS 🌸

v.lrs.label
v.lrs.label --help
v.lrs.label input=name output=name  [llayer=string]   [rsdriver=string]
[rsdatabase=string]  rstable=string  [labels=string]
[offset=string[,string,...]]   [xoffset=float]   [yoffset=float]
[reference=string]   [font=string]   [size=integer]   [color=name]
[width=integer]   [highlight_color=name]   [highlight_width=integer]
[bgcolor=name]   [border=name]   [opaque=string]   [--overwrite]
[--help]  [--verbose]  [--quiet]  [--ui]

🎀 Flags

• --overwrite — lets your output files just bulldoze right over any existing files, no questions asked 😤
• --help — prints the usage summary, like a lil cheat sheet
• --verbose — makes the module talk a lot more, verbose module output
• --quiet — shhh 🤫 quiet module output
• --ui — forces the GUI dialog to launch

💖 Parameters

• input=name [required] — name of the input vector map; this is the vector map that actually contains the lines
• output=name [required] — the output vector map where the stationing gets written
• llayer=string — layer number or name, aka the line layer. Default: 1
• rsdriver=string — driver name for the reference system table. Options: dbf, mysql, odbc, ogr, pg, sqlite. Default: sqlite
• rsdatabase=string — database name for the reference system table. Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db
• rstable=string [required] — the name of the reference system table
• labels=string — label file
• offset=string[,string,...] — PM left, MP right, stationing left, stationing right offset. Default: 50,100,25,25
• xoffset=float — offset label in label x-direction, in map units. Default: 25
• yoffset=float — offset label in label y-direction, in map units. Default: 5
• reference=string — reference position. Options: center, left, right, upper, lower. Default: center
• font=string — the font. Default: standard
• size=integer — label size (in map-units). Options: 1-1000. Default: 100
• color=name — text color. Either a standard color name or an R:G:B triplet. Default: black
• width=integer — line width of text. Only for d.label output. Options: 1-100. Default: 1
• highlight_color=name — highlight color for text. Either a standard color name, an R:G:B triplet, or "none". Default: none
• highlight_width=integer — line width of highlight color. Only for d.label output. Options: 0-100. Default: 0
• bgcolor=name — background color. Either a standard color name, an R:G:B triplet, or "none". Default: none
• border=name — border color. Either a standard color name, an R:G:B triplet, or "none". Default: none
• opaque=string — opaque to vector. Only relevant if background color is selected. Options: yes, no. Default: yes

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🦋 DESCRIPTION 🦋

v.lrs.label generates LRS labels so your LRS looks pretty-printed and adorable ✨. This example is written for the Spearfish dataset (and it continues the example from v.lrs.create, so it's a whole saga, iykyk).

v.lrs.label route_lrs rstable=route_lrs output=route_lrs_labels \
            labels=labels col=red size=50 xoffset=100
g.region vector=route_lrs n=n+100 s=s-100 -p
d.erase
d.vect route_lrs
d.vect route_lrs_labels col=grey type=line
d.vect busstops disp=attr attr=cat size=10 bg=white lcol=green yref=bottom
d.vect busstops icon=basic/circle fcol=green
d.labels labels

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👀 SEE ALSO 👀

v.lrs.create, v.lrs.segment, v.lrs.where, d.labels, v.label

LRS tutorial, Introducing the Linear Reference System in GRASS

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👑 AUTHORS 👑

• Radim Blazek, ITC-irst/MPA Solutions
• Documentation update (based on above journal article and available fragments): Markus Neteler

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💾 SOURCE CODE 💾

Available at: v.lrs.label source code (history)

Latest change: Friday May 09 14:33:40 2025 in commit: b356c7e108fcbeca77474c8e83ebec8f1e7b3e4a

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

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

okay bestie that's the whole page, no cap — GRASS 8.5.0, v.lrs.label(1grass), mwah, slay, go label some roads 🫶✨