Computer Explorations of Fractals, Chaos,Complex Systems, and Adaptation

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 · three themes · part synopses · selected excerpts · all figures from book · quotes from book · glossary from book · bibliography · slide show
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 · overview &documentation · FAQ list* · download source code · java applets
 Miscellany
 · news* · reviews & awards · errata · for educators · bibliography (BibTeX format) · other links
 IFS Documentation

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#### NAME

```       ifs - generate fractals with an IFS

```

#### SYNOPSIS

```       ifs -help
or
ifs    [-infile string] [-width integer] [-height integer]
[-border integer] [-its  integer]  [-skip  integer]
[-term string] [-inv] [-mag integer]

```

#### DESCRIPTION

```       An  affine  fractal is computed via an Iterated Functional
System.  The rules must be supplied from a file with  each
line  consisting  of six values (A-F) such that the values
of A-D describe a 2x2 matrix (A, B; C, D), while E  and  F
describes a 2x1 column vector (E; F).

```

#### OPTIONS

```       -infile string
Data input file.

-width integer
Width of the plot in pixels.

-height integer
Height of the plot in pixels.

-border integer
Number of pixels in border.

-its integer
Number of iterations.

-skip integer
Number of iteration to skip.

-term string
How to plot points.

-inv   Invert colors?

-mag integer
Magnification factor.

```

#### MISCELLANY

```       There  is a shell script called 'ifscma' supplied with the
source code that has a simple interface that allows you to
reference  sets of predefined rules by name.  You may also
wish to see the author's book, "The  Computational  Beauty
of Nature," for some more examples.

```

#### BUGS

```       No  sanity  checks  are performed to make sure that any of
the options make sense.

The maximum number of affine rules is  determined  by  the
constant  MAXRULES,  which  you  may  need to adjust under
exceptional circumstances.

```

#### AUTHOR

```       Copyright (c) 1997, Gary William Flake.

Permission granted for any use according to  the  standard
GNU ``copyleft'' agreement provided that the author's com-
ments are neither modified nor removed.   No  warranty  is
given or implied.

```