Martin Landa 3d7ee5c04f change REFERENCE to REFERENCES in the manual pages (thanks to Ludmila Furtkevicova) 9 lat temu
..
Makefile d6700ffb2c Update LIBES, DEPENDENCIES from linkage database 15 lat temu
README db49180dd7 welcome to GRASS 7.0.svn 17 lat temu
frac.h cef093c56b Don't include <grass/raster.h> where not needed 15 lat temu
main.c e96dba8bf0 more keywords (*.surf.*) 15 lat temu
process.c 9d73aeac18 missing includes 15 lat temu
r.surf.fractal.html 3d7ee5c04f change REFERENCE to REFERENCES in the manual pages (thanks to Ludmila Furtkevicova) 9 lat temu
r_surf_fractal.jpg 105ea747cb + example, +image 12 lat temu
r_surf_fractal_simple.png 78b6b62e90 r.surf.fractal: add simple example to manual (the existing is too complicated to be the only example) 10 lat temu
spec_syn.c 498f194bcc Replace rand/random/lrand48/etc with lib/gis random number functions 10 lat temu
write_rast.c df4d81abd4 Move raster-specific functions from lib/gis to lib/raster: 15 lat temu

README

r.surf.fractal

GRASS module to create 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).

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.

Jo Wood, 19th October, 1994

-------

Usage:
r.surf.fractal out=name [d=value] [n=value]

Parameters:
out Name of fractal surface raster layer
d Fractal dimension of surface (2 < D < 3)
default: 2.05
n Number of intermediate images to produce
default: 0