r.usler(1)

📦
version 8.4.2 · 8 versions
, in fedora 44

🌧️ r.usler

okay bestie, gather round 💖 this is the GRASS GIS manual page for r.usler — a lil raster module that lives in GRASS GIS 8.4.2 and computes the USLE R factor, aka the Rainfall erosivity index. she's giving hydrology, she's giving soil science, she's giving "why is my hillside melting" energy. 🌈

✨ NAME ✨

r.usler — Computes USLE R factor, Rainfall erosivity index. that's it, that's the girl 💅

🏷️ KEYWORDS 🏷️

raster, hydrology, rainfall, soil, erosion

📜 SYNOPSIS 📜

r.usler
r.usler --help
r.usler input=name output=name method=string  [--overwrite]  [--help]
        [--verbose]  [--quiet]  [--ui]

🚩 Flags 🚩

  • --overwrite — Allow output files to overwrite existing files. yes bestie she will absolutely bulldoze what's already there, so be careful 💀
  • --help — Print usage summary. the "what does this even do" button 🫶
  • --verbose — Verbose module output. she will NOT stop talking and honestly? we love that for her.
  • --quiet — Quiet module output. shhh. no thoughts, just output. 🤫
  • --ui — Force launching GUI dialog. for the girlies who prefer clicking to typing, no shame 💖

🎀 Parameters 🎀

  • input=name [required] — Name of annual precipitation raster map [mm/year]. this is your rainfall girlie, in millimeters per year 🌧️
  • output=name [required] — Name for output USLE R raster map [MJ.mm/ha.hr.year]. that unit is a whole mouthful, just trust the process ✨
  • method=string [required] — Name of USLE R equation. which empirical baddie are we picking today?
    • Options: roose, morgan, foster, elswaify
    • Default: morgan
    • roose: Roosle (1975)
    • morgan: Morgan (1974)
    • foster: Foster (1981)
    • elswaify: El-Swaify (1985)

💖 DESCRIPTION 💖

so r.usler calculates the USLE R factor for Rainfall erosivity. no cap. it lets you run several empirical equations, and you get to pick your fave:

  • Roosle (1975)
  • Morgan (1974)
  • Foster(1981)
  • El-Swaify (1985)

four icons, one module. the way that she just does that 😭👑

📝 NOTES 📝

lowkey important: r.watershed provides for USLE L, S, LS factors. so if you need the other letters of the USLE alphabet, that's where you go 🦋

🍓 EXAMPLE 🍓

TBD.

(no fr that's literally what it says, the example is TBD. we're all waiting together bestie 🙈)

👀 SEE ALSO 👀

r.uslek, r.watershed

iykyk 💜

👑 AUTHORS 👑

  • Natialia Medvedeva, SIC-ISDC, Ashgabat, Turkmenistan
  • Yann Chemin, SIC-ISDC, Ashgabat, Turkmenistan

🔥 SOURCE CODE 🔥

Available at: r.usler source code (history)

Accessed: Saturday Jan 17 05:41:04 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 r.usler(1) from the GRASS GIS 8.4.2 Reference Manual — source and version courtesy of the GRASS Development Team, © 2003-2025, and this particular copy was accessed Saturday Jan 17 05:41:04 2026 (yes, the future, she's time-traveling 💅✨). now go compute some erosivity, main character. 🌸💖🌈

📦 where this page comes from