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r.surf.fractal
Langue: en
Version: 369353 (fedora - 01/12/10)
Section: 1 (Commandes utilisateur)
NAME
r.surf.fractal - Creates a fractal surface of a given fractal dimension.KEYWORDS
rasterSYNOPSIS
r.surf.fractalr.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.ukASSIST's home
Last changed: $Date: 2007-07-04 07:15:42 +0200 (Wed, 04 Jul 2007) $
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