Note: A new GRASS GIS stable version has been released: GRASS GIS 7.4, available here.
Updated manual page: here
NAME
r.surf.random - Produces a raster surface map of uniform random deviates 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
r.surf.random produces a raster map layer of uniform random deviates
whose range can be expressed by the user. It is essentialy 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.
Histogram of map generated with r.surf.random
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
r.random.surface,
r.surf.contour,
r.surf.fractal,
r.surf.gauss,
r.surf.idw,
v.surf.rst
Jo Wood
Midlands Regional Research Laboratory (ASSIST)
University of Leicester
October 1991
Last changed: $Date: 2016-06-02 13:50:01 -0700 (Thu, 02 Jun 2016) $
SOURCE CODE
Available at: r.surf.random source code (history)
Note: A new GRASS GIS stable version has been released: GRASS GIS 7.4, available here.
Updated manual page: here
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GRASS Development Team,
GRASS GIS 7.0.7svn Reference Manual