r.surf.random(1grass) GRASS GIS User's Manual r.surf.random(1grass)
NAME
r.surf.random - Produces a raster surface map of uniform random devi-
ates with defined range.
KEYWORDS
raster, surface, random
SYNOPSIS
r.surf.random
r.surf.random --help
r.surf.random [-i] output=name [min=integer] [max=integer]
[--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
-i
Create an integer raster map
--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
min=integer
Minimum random value
Default: 0
max=integer
Maximum random value
Default: 100
DESCRIPTION
r.surf.random produces a raster map layer of uniform random deviates
whose range can be expressed by the user. It is essentially the same as
r.surf.gauss, but uses a linear random number generator instead. It
uses the random number generator drand48() or rand(), depending on the
user’s platform.
EXAMPLE
g.region -p n=228500 s=215000 w=630000 e=645000 res=10
r.surf.random out=random min=0 max=100
# check result
r.univar random
Figure: Random surface example (min: 10; max: 100)
With the histogram tool the cell values versus count can be shown.
Figure: Histogram of random surface example (min: 10; max: 100)
SEE ALSO
r.random.surface, r.surf.contour, r.surf.fractal, r.surf.gauss,
r.surf.idw, v.surf.rst
AUTHOR
Jo Wood
Midlands Regional Research Laboratory (ASSIST)
University of Leicester
October 1991
SOURCE CODE
Available at: r.surf.random source code (history)
Accessed: unknown
Main index | Raster index | Topics index | Keywords index | Graphical
index | Full index
© 2003-2022 GRASS Development Team, GRASS GIS 7.8.7 Reference Manual
GRASS 7.8.7 r.surf.random(1grass)
Generated by dwww version 1.14 on Fri Jan 24 09:37:25 CET 2025.