r.surf.gauss(1grass)

✨ r.surf.gauss ✨

okay bestie, welcome to the GRASS User's Manual page for r.surf.gauss 💖 this one is literally so fun, it makes random surfaces and it's giving main character energy.

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🌸 NAME 🌸

r.surf.gauss — it generates a raster map using a gaussian random number generator. 🎀

and the way that the mean AND the standard deviation of those gaussian deviates can both be expressed by you, the user? iconic. you're in charge. periodt.

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🔑 KEYWORDS 🔑

raster, surface, random

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🦋 SYNOPSIS 🦋

r.surf.gauss
r.surf.gauss --help
r.surf.gauss output=name  [mean=float]   [sigma=float]   [seed=integer]
[--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

✨ Flags: ✨

• --overwrite — lets your output files overwrite existing files. yes queen, bulldoze them 🫶
• --help — prints the usage summary, iykyk
• --verbose — verbose module output, so it tells you everything 💅
• --quiet — quiet module output, so it tells you nothing 🙈
• --ui — forces the GUI dialog to launch

💜 Parameters: 💜

• output=name [required] — the name for your output raster map. you gotta name it, no cap, it's required
• mean=float — the distribution mean. Default: 0.0
• sigma=float — the standard deviation. Default: 1.0
• seed=integer — the seed value for the random number generator. using the same seed ensures identical results, while a randomly generated seed produces different outcomes in each run 🔥

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🧚 DESCRIPTION 🧚

so r.surf.gauss produces a raster map of Gaussian deviates, and the mean and standard deviation of those deviates can be expressed by the user. it uses a Gaussian random number generator. lowkey it's essentially the same as r.surf.random, except it uses a Gaussian random number generator instead. that's the whole vibe. 💖

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🌈 EXAMPLE 🌈

g.region -p n=228500 s=215000 w=630000 e=645000 res=10
r.surf.gauss out=gauss mean=0 sigma=10
# check result
r.univar gauss

Figure: Random Gaussian surface example (mean: 0; sigma: 10) ✨

with the histogram tool the cell values versus count can be shown. so cute.

Figure: Histogram of random Gaussian surface example (mean: 0; sigma: 10) 📊

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👑 SEE ALSO 👑

r.surf.contour, r.surf.fractal, r.surf.idw, r.surf.random, v.surf.rst

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💖 AUTHOR 💖

Jo Wood, ASSIST's home 🫶

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⭐ SOURCE CODE ⭐

Available at: r.surf.gauss source code (history)

Latest change: Thursday Mar 06 19:23:31 2025 in commit: 5fd4234a4f6ab09eb244c67111a1db2d84b6d0fe

Main index | Raster 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 r.surf.gauss(1grass) from the GRASS User's Manual, running on GRASS 8.5.0 — go make some gaussian noise, slay, and remember: same seed, same result. periodt. 🎀✨🦋