r.li.dominance(1)

📦
version 8.4.2 · 8 versions
, in fedora 44

🌸 r.li.dominance(1) — the GRASS GIS User's Manual, but make it a group chat 🌸

okay bestie, welcome to the GRASS GIS manual page for r.li.dominance, and yes it's giving "landscape ecology but make it fashion". Sit down, grab a strawberry 🍓, we're doing diversity indices.

✨ NAME ✨

r.li.dominance — Calculates dominance's diversity index on a raster map 💅

🏷️ KEYWORDS 🏷️

raster, landscape structure analysis, diversity index

📜 SYNOPSIS 📜

r.li.dominance
r.li.dominance --help
r.li.dominance input=name config=name output=name  [--overwrite]
[--help]  [--verbose]  [--quiet]  [--ui]

🎀 Flags:

  • --overwrite — Allow output files to overwrite existing files (aka permission to be messy 💀)
  • --help — Print usage summary
  • --verbose — Verbose module output (she's chatty, we love her)
  • --quiet — Quiet module output (she's mysterious, also valid)
  • --ui — Force launching GUI dialog

🧚 Parameters:

  • input=name [required] — Name of input raster map
  • config=name [required] — Configuration file
  • output=name [required] — Name for output raster map

💖 DESCRIPTION 💖

r.li.dominance calculates the "dominance diversity index" as:

with:

  • i: patch type
  • m: number of different patch types
  • pi: proportional abundance of patch type i

like. that's it. that's the math. iconic behavior honestly 👑

⚠️ NOTES ⚠️

Do not use absolute path names for the config and output file/map parameters. fr fr, don't do it. 🙈

If the "moving window" method was selected in g.gui.rlisetup, then the output will be a raster map, otherwise an ASCII file will be generated in the folder C:\Users\userxy\AppData\Roaming\GRASS8\r.li\output\ (MS-Windows) or $HOME/.grass8/r.li/output/ (GNU/Linux).

If the input raster map contains only NULL values then r.li.dominance returns NULL. no thoughts, head empty, NULL. 🫥

🔥 EXAMPLES 🔥

To calculate the dominance diversity index on map my_map, using my_conf configuration file (previously defined with g.gui.rlisetup) and saving results in my_out, run:

r.li.dominance input=my_map conf=my_conf output=my_out

Forest map (Spearfish sample dataset) example:

g.region raster=landcover.30m -p
r.mapcalc "forests = if(landcover.30m >= 41 && landcover.30m <= 43,1,null())"
r.li.dominance input=forests conf=movwindow7 out=forests_dominance_mov7
r.univar forests_dominance_mov7

Forest map (North Carolina sample dataset) example:

g.region raster=landclass96 -p
r.mapcalc "forests = if(landclass96 == 5, 1, null() )"
r.li.dominance input=forests conf=movwindow7 out=forests_dominance_mov7
# verify
r.univar forests_dominance_mov7
r.to.vect input=forests output=forests type=area
d.mon wx0
d.rast forests_dominance_mov7
d.vect forests type=boundary

👀 SEE ALSO 👀

  • r.li — package overview
  • g.gui.rlisetup

📚 REFERENCES 📚

McGarigal, K., and B. J. Marks. 1995. FRAGSTATS: spatial pattern analysis program for quantifying landscape structure. USDA For. Serv. Gen. Tech. Rep. PNW-351. (PDF)

👑 AUTHORS 👑

  • Serena Pallecchi, student of Computer Science University of Pisa (Italy).
  • Commission from Faunalia Pontedera (PI), Italy (www.faunalia.it)
  • Markus Metz

🦋 SOURCE CODE 🦋

Available at: r.li.dominance source code (history)

Accessed: Saturday Jan 17 05:40:52 2026

Main index | Raster index | Topics index | Keywords index | Graphical index | Full index

© 2003-2025 GRASS Development Team, GRASS GIS 8.4.2 Reference Manual

and that's the whole page bestie!! 💖 this was GRASS 8.4.2, page r.li.dominance(1), and the accessed timestamp was Saturday Jan 17 05:40:52 2026 — copyright © 2003-2025 GRASS Development Team. go calculate some dominance, you ate that. periodt. 💅✨

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