Q22: Where can I obtain software packages to generate fractals? A22: For X windows: xmntns and xlmntn: these generate fractal mountains. They can be obtained from ftp: ftp.uu.net:/usenet/comp.sources.x/volume8/xmntns [137.39.1.9]. xfroot: generates a fractal root window. xmartin: generates a Martin hopalong root window. xmandel: generates Mandelbrot/Julia sets. xfroot, xmartin, xmandel are part of the X11 distribution. lyap: generates Lyapunov exponent images. Ftp from: ftp.uu.net:/usenet/comp.sources.x/volume17/lyapunov-xlib . spider: Uses Thurston's algorithm for computing postcritically finite polynomials, draws Mandelbrot and Julia sets using the Koebe algorithm, and draws Julia set external angles. Ftp from: lyapunov.ucsd.edu:pub/inls-ucsd/spider . xfractal: fractal drawing program. Ftp from: clio.rz.uni- duesseldorf.de:/X11/uploads [134.99.128.3]. Distributed X systems: MandelSpawn: computes Mandelbrot/Julia sets on a network of machines. Ftp from: export.lcs.mit.edu:/contrib [18.24.0.12] or funic.funet.fi:/pub/X11/contrib [128.214.6.100] in mandelspawn- 0.06.tar.Z. gnumandel: computes Mandelbrot images on a network. Ftp from: informatik.tu-muenchen.de:/pub/GNU/gnumandel [131.159.0.110]. For SunView: Mandtool: A Mandelbrot computing program. Ftp from: spanky.triumf.ca:/fractals/programs/mandtool ; code is in M_TAR.Z . For Unix/C: lsys: generates L-systems as PostScript or other textual output. No graphical interface at present. (in C++) Ftp from: ftp.cs.unc.edu:/pub/lsys.tar.Z . lyapunov: generates PGM Lyapunov exponent images. Ftp from: ftp.uu.net:/usenet/comp.sources.misc/volume23/lyapuov . SPD: contains generators for fractal mountain, tree, recursive tetrahedron. Ftp from: princeton.edu:/pub/Graphics [128.112.128.1]. Fractal Studio: Mandelbrot set program; handles distributed computing. Ftp from archive.cs.umbc.edu:/pub/peter/fractal-studio [130.85.100.53]. For Mac: fractal, L-System, 3DL-System, IFS, FracHill are available from uceng.uc.edu:/pub/wuarchive/graphics/graphics/radiosity/Radiance/pub/mac . fractal-wizard-15.hqx, julias-dream-107.hqx, mandel-net.hqx, mandel-zot- 304.hqx, and mandella-70.hqx are available by ftp: sumex.stanford.edu:/info-mac/app . mandel-tv: a very fast Mandelbrot generator. Ftp from: oswego.oswego.edu:/pub/mac/da/mandel-tv.hqx [129.3.1.1]. There are also commercial programs, such as IFS Explorer and Fractal Clip Art, which are published by Koyn Software (314) 878-9125. For NeXT: Lyapunov: generates Lyapunov exponent images. Ftp from: nova.cc.purdue.edu:/pub/next/2.0-release/source . For MSDOS: DEEPZOOM: a high-precision Mandelbrot program for displaying highly zoomed fractals. Obtain from hilljr@jupiter.saic.com . Fractal WitchCraft: a very fast fractal design program. Ftp from: garbo.uwasa.fi:/pc/demo/fw1-08.zip [128.214.87.1]. CAL: generates more than 15 types of fractals including Mandelbrot, Lyapunov, IFS, user-defined formulas, logistic equation, and quaternion julia sets. Ftp from: oak.oakland.edu:/pub/msdos/graphics [141.210.10.117] (or any other Simtel mirror) in frcal035.zip. Fractal Discovery Laboratory: designed for use in a science museum or school setting. The Lab has five sections: Art Gallery ( 72 images -- Mandelbrots, Julias, Lyapunovs), Microscope ( 85 images -- Biomorph, Mandelbrot, Lyapunov, ...), Movies (165 images, 6 "movies": Mandelbrot Evolution, Splitting a Mini-Mandelbrot, Fractal UFO, ...), Tools (Gingerbreadman, Lorentz Equations, Fractal Ferns, von Koch Snowflake, Sierpinski Gasket), and Library (Dictionary, Books and Articles). Sampler available from Compuserver GRAPHDEV Lib 4 in DISCOV.ZIP, or send high-density disk and self-addressed, stamped envelope to: Earl F. Glynn, 10808 West 105th Street, Overland Park, Kansas 66214-3057. WL-Plot: plots functions including bifurcations and recursive relations. Ftp from wuarchive.wustl.edu:/pub/msdos_uploads/misc in wlplt231.zip. There are many fractal programs available from oak.oakland.edu:/pub/msdos/graphics [141.210.10.117]: forb01a.zip: Displays orbits of Mandelbrot mapping. C/E/VGA fract30.arc: Mandelbrot/Julia set 2D/3D EGA/VGA Fractal Gen fractfly.zip: Create Fractal flythroughs with FRACTINT fdesi313.zip: Program to visually design IFS fractals frain182.zip: FRACTINT v18.1 EGA/VGA/XGA fractal generator frasr182.zip: C & ASM src for FRACTINT v18.1 fractal gen. frcal040.zip: Fractal drawing program: 15 formulae available frcaldmo.zip: 800x600x256 demo images for FRCAL030.ZIP For Windows: dy-syst.zip. This program explores Newton's method, Mandelbrot set, and Julia sets. Ftp from mathcs.emory.edu:/pub/riddle . For Amiga: (all entries marked "ff###" are .lzh files in the Fish Disk set available at ux1.cso.uiuc.edu:/amiga/fish and other sites) General Mandelbrot generators with many features: Mandelbrot (ff030), Mandel (ff218), Mandelbrot (ff239), TurboMandel (ff302), MandelBltiz (ff387), SMan (ff447), MandelMountains (ff383, in 3-D), MandelPAUG (ff452, MandFXP movies), MandAnim (ff461, anims), ApfelKiste (ff566, very fast), MandelSquare (ff588, anims) Mandelbrot and Julia sets generators: MandelVroom (ff215), Fractals (ff371, also Newton-R and other sets) With different algorithmic approaches (shown): FastGro (ff188, DLA), IceFrac (ff303, DLA), DEM (ff303, DEM), CPM (ff303, CPM in 3-D), FractalLab (ff391, any equation) Iterated Function System generators (make ferns, etc): FracGen (ff188, uses "seeds"), FCS (ff465), IFSgen (ff554), IFSLab (ff696, "Collage Theorem") Unique fractal types: Cloud (ff216, cloud surfaces), Fractal (ff052, terrain), IMandelVroom (strange attractor contours?), Landscape (ff554, scenery), Scenery (ff155, scenery), Plasma (ff573, plasma clouds) Fractal generators: PolyFractals (ff015), FFEX (ff549) Lyapunov fractals: Ftp from: ftp.luth.se:/pub/aminet/new/lyapunovia.lha [130.240.18.2]. Commercial packages: Fractal Pro 5.0, Scenery Animator 2.0, Vista Professional, Fractuality (reviewed in April '93 Amiga User International). MathVISION 2.4. Generates Julia, Mandelbrot, and others. Includes software for image processing, complex arithmetic, data display, general equation evaluation. Available for $223 from Seven Seas Software, Box 1451, Port Townsend WA 98368. Software for computing fractal dimension: Fractal Dimension Calculator is a Macintosh program which uses the box- counting method to compute the fractal dimension of planar graphical objects. Ftp from: wuarchive.wustl.edu:/mirrors4/architec/Fractals/FracDim.sit.hqx . FD3: estimates capacity, information, and correlation dimension from a list of points. It computes log cell sizes, counts, log counts, log of Shannon statistics based on counts, log of correlations based on counts, two-point estimates of the dimensions at all scales examined, and over-all least-square estimates of the dimensions. Ftp from: lyapunov.ucsd.edu:/pub/cal-state-stan [132.239.86.10]. Also look in lyapunov.ucsd.edu:/pub/inls-ucsd for an enhanced Grassberger-Procaccia algorithm for correlation dimension. A MS-DOS version of FP3 is available by request to gentry@altair.csustan.edu.Go Back Up