Every day at a few minutes past
Wisconsin time), a new fractal
is automatically posted using a variation of the program
included with the book Strange Attractors:
Patterns in Chaos by Julien C.
cases below to see them at higher (640 x
resolution with a code that identifies them according to a scheme
in the book. Older Fractals of the Day are saved in an archive. If your browser supports
you might enjoy
that creates a new fractal image every five seconds or so. If you
like to place the Fractal of the Day on your Web page, you may do
you mention that it is from Sprott's Fractal Gallery and provide a
link back to this page. If you want to make your own
fractals, I recommend the Chaoscope
The following rather standard fractals are low-resolution sample screen captures from the Chaos Demonstrations program by J. C. Sprott and G. Rowlands. You may also want to view an index of these and many other screen captures from the program.
The following fractals are low-resolution sample color plates from the book Strange Attractors: Creating Patterns in Chaos by Julien C. Sprott. You may also want to view an index of all 371 figures from the book.
The following 3-dimensional strange attractors are mostly from the book Strange Attractors: Creating Patterns in Chaos by Julien C. Sprott but are here rendered in higher (800 x 600) resolution with the third dimension mapped to a palette of 256 colors. Additional such cases can be produced automatically by the program sa256.exe that searches for chaotic solutions of a general system of quadratic maps with 30 coefficients.
The following fractals are standard Julia sets of the function z^2 + c. They were produced automatically by the program julia256.exe by J. C. Sprott that searches the complex-c plane for interesting cases. The names consist of two four-digit hexadecimal numbers p and q such that c is given by c = -2 + p / 21845 + i q / 43691. The plots cover the range z = (-0.02, 0.02) + (-0.02, 0.02) i.
The following fractals are generalized Julia sets of 2-D quadratic maps with twelve coefficients. They were produced automatically by the program genjulia.exe by J. C. Sprott that searches the 12-dimensional space of coefficients for interesting cases. The technique is described in a paper "Automatic Generation of General Quadratic Map Basins" by J. C. Sprott and C. A. Pickover. The coefficients are coded into the names according to a scheme described in the book Strange Attractors: Creating Patterns in Chaos. The plots cover the range -1 < x < 1 and -1 < y < 1. A few additional images of this type produced with the program Fractal eXtreme by Cygnus Software are available.
The following fractals are iterated function systems generated by the random iteration algorithm using two linear affine transformations. Color is introduced according to the number of successive applications of each transform. They were produced automatically by the program ifs256.exe by J. C. Sprott that searches the 12-dimensional space of coefficients for interesting cases. The coefficients are coded into the names according to a scheme described in the paper "Automatic Generation of Iterated Function Systems".
The following icons are produced from 3-D strange attractors by mapping the x-coordinate to radius and the y-coordinate to angle and replicating the pattern with different orientations. The z-coordinate is represented by one of 256 colors, and a shadow is added to enhance the illusion of depth. The technique is described in a paper "Strange Attractor Symmetric Icons" by J. C. Sprott. The equations used are coded into the name according to a scheme described in the book Strange Attractors: Creating Patterns in Chaos by Julien C. Sprott. Additional such cases can be produced automatically by the program icon256.exe. If you like these, you can view an index of 100 additional such examples, or an index of cyclic symmetric attractor anaglyphs produced by a different method. You can also view an index of fractal tilings useful as Windows wallpaper or HTML backgrounds (as on this page).
You might also like to look at an index of many thousands of fractals I've collected off the net, mostly from the newsgroup alt.binaries.pictures.fractals and from the World Wide Web. In most cases, I don't know the original source, and so I apologize to anyone whose copyright may have been violated. Many of the nicest of these images are the work of Paul Carlson whose Fractal Gallery you may wish to visit. Here's a few cases I've selected as the best of the best:
These images are from the iterated mapping xnew = a + bx + cx2 + dy + ez + f sin(pi t/8), ynew = x, znew = y, where a through f are constants coded into the file name as described above. If your browser supports animated GIFs, you will see 16 looping frames (t mod 16). These images illustrate the stretching that causes chaos and the folding that produces the fractal microstructure of strange attractors. The DOS programs that were used to produce them are available. The individual frames were assembled using the GIF Construction Set by Alchemy Mindworks Inc. You might also like to look at an index of other fractal GIF animations, which includes 19 of the simplest known chaotic flows.
These images are real-world fractals photographed by J. C. Sprott. More images of this type can be found in the index of natural fractals.
These very high resolution (4400 x
strange attractors (c) by J. C. Sprott
included for anyone
who would like to make publication quality prints or display art.
or display them without further permission provided you
Thousands more like these are available upon request. See also the
and high-resolution images from the
accompanies the book "Images of a Complex
Art and Poetry of Chaos" and the strange
prints offered for sale.
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