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167 lines
6.9 KiB
Plaintext
Executable File
167 lines
6.9 KiB
Plaintext
Executable File
CHAOS FOR JAVA - APPLICATION VERSION.
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The software is free for non commercial use without explicit permission
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from the author. Before downloading or using it it you must read and agree
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to the licence agreement. All other rights reserved.
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Copyright ©1999-2003 Brian Davies.
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IMPORTANT NOTICE:
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Application Version 1.2.2 has no expiry date, but you should visit the website
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http://sunsite.anu.edu.au/education/chaos
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for information on later versions.
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FEATURES:
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Features of Application Version, beyond those of the Applet Version
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documented in my book "Exploring Chaos: theory and experiment", are
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briefly summarised as:
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1. After startup there is a window which has menus and buttons. In the
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MacOS9 version the window may be hidden using the close box (which does
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not actually close it), in other versions it may be minimized once some
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other window(s) are open, since all windows carry menus (for the MacOS X
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version, menus are at the top of the screen and always present).
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2. Documents may be saved and then re-opened. You will be prompted
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automatically about saving. Note that no computational or graphical
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information is saved, only the parameter and window settings necessary
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for exact reconstruction.
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3. Pictures/Graphs may be saved in the following cross platform formats:
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(i) GIF - the compression algorithm is subject to patent and you assume
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responsibility for any use you make of the output. This format may
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be omitted from future versions.
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(ii) JPEG - the compression is not lossless but the quality setting is
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high, so the files will be quite large. In most circumstances this
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will not be the appropriate format to use.
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(iii) PNG - this format was introduced (in part) to circumvent the use
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of patented algorithms. There is increasing support for PNG format
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in Browsers and Word Processors. The files will be small - probably
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smaller than the GIF output.
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4. Printing is possible, using the rudimentary printing features of Java 1.1.
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Because of these limitations, printing is not particularly good. Device and
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resolution independence are supported in Java 1.2 (aka Java 2) and I expect
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to move to this when time permits.
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5. Preferences may be saved and re-loaded, ie, all choices available via
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the Preferences menu. You will be prompted automatically about saving if
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needed. Note that preferences are application wide, ie, fonts apply to all
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windows, colours to all windows of that type, ie, Bifurcation Diagrams
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have distinct colour settings from Fourier Analysis, and so on.
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BUG REPORTS:
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Bug reports may be sent to
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Brian.Davies@anu.edu.au
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but it is essential to quote all the information in the startup panel, ie
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(i) the platform and operating system - displayed top left,
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(ii) the virtual machine information - displayed top right,
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(iii) the Chaos for Java version - displayed bottom.
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VERSION HISTORY:
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Version 1.0 - June 30, 1999. Original version released for use with book.
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Version 1.0.1 - August 2, 1999. Resolves an incompatibility with
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Internet Explorer 5 for Windows.
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Version 1.0.2 - September 22, 1999. Minor bug fixes.
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Version 1.0.3 - October 1, 1999. Minor changes to allow application
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versions.
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Version 1.0.4 - November 1, 1999. Enhancement (animation) of "Graphical
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Analysis".
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Version 1.0.5 - January 7, 2000. Minor bug fixes.
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Version 1.1 - January 28, 2000. First application version.
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Version 1.1 - March 1, 2000. Common applet/application version.
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Version 1.1.1 - May 5, 2000. Save as png (portable network graphics)
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format. 8th order Runge-Kutta integration of ODEs. Enhancements
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of application version user interface.
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Version 1.1.2 - November 1, 2000. Minor bug fixes. Enhancements of user
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interface and application preferences. Iterate(1d) has animation and
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includes 2d maps. Return maps include 1d maps. Saved files not all
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compatible with previous versions.
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Version 1.1.3 - April 24, 2001.
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(i) Major enhancement of Iterate(2d) to allow investigation of fixed
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points of two dimensional maps and compositions. The zero-curves of
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x - f(x,y) and y - g(x,y) may be viewed in the x-y plane, accurate positions
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and eigenvalues of fixed points may also be obtained.
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(ii) ODEs: the two-well oscillator [f(x) = x(1-x^2)] and Duffing oscillator
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[f(x) = -x(1+x^2)] are included.
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(iii) File format: version 1.1.3 will read and convert files saved from
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version 1.1.2 but the new file format is incompatible with earlier ones.
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(iv) Minor bug fixes and user interface enhancements.
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Version 1.1.4 - October 22, 2001.
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(i) Minor bug fixes and enhancements.
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(ii) Version 1.1.4 will read and convert files saved from versions 1.1.2
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and 1.1.3 but the new file format is incompatible with earlier ones.
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Version 1.1.5 - June 1, 2002.
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(i) Minor bug fixes.
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(ii) Some features not documented in "Exploring Chaos: Theory and Experiment"
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temporarily removed.
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Version 1.2 - June 2, 2003.
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(i) Complete refactorisation of all code.
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(ii) Numerous interface improvements.
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(iii) Choice of display modes.
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(iv) Dual orbits for PoincarŽ sections.
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(v) Fixed points and stability analysis for compositions of two-dimensional
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maps and PoincarŽ sections.
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(vi) Graphical visualisation of bifurcations of two-dimensional maps and
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PoincarŽ sections.
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(vii) Basins of attraction for PoincarŽ sections.
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(viii) Bifurcation diagrams of stable and unstable orbits for two-dimensional maps.
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(ix) Better estimates of accuracy of fixed points of two-dimensional systems.
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(x) Variational equations used for Lyapunov exponents of PoincarŽ sections.
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Version 1.2.1 - Septembeer 30, 2003.
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(i) Minor big fixes.
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(ii) Improved algorithm for one-dimensional bifurcation diagrams (periodic orbits).
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(iii) MacOSX version has "aqua" appearance and Java 2 printing.
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Version 1.2.2 - November 30, 2003.
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(i) Java 2 printing for all platforms.
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(ii) Improvements to the graphical user interface.
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(iii) Minor bug fixes.
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ACKNOWLEDGEMENTS
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Development of this software has been assisted by support from the
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Australian Apple University Consortium,
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http://auc.uow.edu.au/
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an international cooperative program between Apple Computer and Australian
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Universities. One of its aims is to develop educational software for the
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Macintosh environment.
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The Gif Encoder is Copyright (1996) by Jef Poskanzer (jef@acme.com).
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The Jpeg Encoder is Copyright (1998) by James R. Weeks and BioElectroMech
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(James@obrador.com).
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The Png Encoder is Copyright (2000) by J. David Eisenberg
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(david@catcode.com) (GNU Lesser General Public License).
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-----------------------------------------------------------------------
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