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r.surf.fractal

NAME

r.surf.fractal - Creates a fractal surface of a given fractal dimension.

KEYWORDS

raster

SYNOPSIS

r.surf.fractal
r.surf.fractal help
r.surf.fractal out=string [d=float] [n=integer] [--verbose] [--quiet]

Parameters:

out=string

Name of fractal surface raster layer

d=float

Fractal dimension of surface (2 < D < 3)
Default: 2.05

n=integer

Number of intermediate images to produce
Default: 0

DESCRIPTION

r.surf.fractal creates a fractal surface of a given fractal dimension. Uses spectral synthesis method. Can create intermediate layers showing the build up of different spectral coefficients (see Saupe, pp.106-107 for an example of this).

Use this module to generate naturally looking synthetical elevation models (DEM).

NOTE

This module requires the FFTW library for computing Discrete Fourier Transforms.

REFERENCE

Saupe, D. (1988) Algorithms for random fractals, in Barnsley M., Devaney R., Mandelbrot B., Peitgen, H-O., Saupe D., and Voss R. (1988) The Science of Fractal Images, Ch. 2, pp.71-136. London: Springer-Verlag.

SEE ALSO

r.surf.contour, r.surf.idw, r.surf.gauss, r.surf.random, r.surf.idw2, v.surf.idw, v.surf.rst jwo@le.ac.uk
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Last changed: $Date: 2007-07-04 07:15:42 +0200 (Wed, 04 Jul 2007) $

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