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r.surf.gauss(1grass) GRASS User's Manual r.surf.gauss(1grass)

NAME

r.surf.gauss - Generates a raster map using gaussian random number generator.
Mean and standard deviation of gaussian deviates can be expressed by the user.

KEYWORDS

raster, surface, random

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:


Allow output files to overwrite existing files

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

Parameters:


Name for output raster map

Distribution mean
Default: 0.0

Standard deviation
Default: 1.0

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.

DESCRIPTION

r.surf.gauss produces a raster map of Gaussian deviates whose mean and standard deviation can be expressed by the user. It uses a Gaussian random number generator. It is essentially the same as r.surf.random, but uses a Gaussian random number generator instead.

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.

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

SEE ALSO

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

AUTHOR

Jo Wood, ASSIST’s home

SOURCE CODE

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

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

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GRASS 8.5.0