r.surf.gauss - GRASS GIS manual

DESCRIPTION
EXAMPLE
SEE ALSO
AUTHOR

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:

--overwrite: Allow output files to overwrite existing files
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

output=name [required]: Name for output raster map
mean=float: Distribution mean; Default: 0.0
sigma=float: Standard deviation; Default: 1.0
seed=integer: 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
EXAMPLE
SEE ALSO
AUTHOR

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.

r.surf.gauss example histogram (mean: 0; sigma: 10)

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

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