LAUNCH PAGE FOR JULIA 2.1
FRACTAL DRAWING PROGRAM

Welcome to the launch page for the Julia fractal drawing program first developed by Team Motivity and Rich Stankewitz of Ball State University, and then further developed by Wendy Conatser, Sida Qiu, and Ben Dean. This program is a specialized tool for the study of various dynamical systems.

The program JULIA is designed to draw (for allowable map types) the following types of sets in the complex plane:

Julia sets of a function.
Julia sets of rational semigroups.
Attractor sets of an Iterated Function System (IFS).
Iterates of a seed value under any of the allowable map types.
Postcritical sets (of finite order) of any function or semigroup of the allowable map types.
Forward and Inverse images (using any of the allowable map types) of the above sets or any sets imported into Julia.

Note:

Additions and improvements are constantly being added and so changes will continue to occur. If you ever have questions, comments or suggestions, please feel free to contact Rich Stankewitz. Help files which describe the features and how to use them are currently available here.

Installation Information

Julia is installed and upgraded using Java Web Start. Java Web Start is automatically included with Java 1.4 and higher versions. When you click the launch link below, Java Web Start will automatically insure that you have the correct version of Java to run the program. Then it will download and run the program and all files associated with it. If the program requires a different version of Java than you are currently running, the new version will be downloaded and used for Julia only. It will not affect your regularly running version of Java.

You will be asked whether you trust the publisher of the software before it is run.

After the program has been installed and run once, it can be accessed either on or off-line through the Java Application Cache Viewer. Accessing the cache viewer on Windows XP is a bit tricky. Go to Start, ControlPanel, Java. On the General tab, under Temporary Internet Files, click on "View..." to access the cache viewer.

Note:

The Java Temporary Internet Files are separate from your system's regular Temporary Internet Files. If you clear your system's Temporary Internet Files through, for example, Disk Cleanup, it will not affect Julia or other Web Start programs.

The cache viewer looks like this:

Select a program in the cache viewer and the control buttons become active.

From these buttons you can run the program either on or off-line, create a shortcut to the program, or uninstall the program. (To run the program off-line, press and hold the run button and two options will appear: run online or off-line. Select run off-line to run the program when there is no internet connection.)

Upgrading

Whenever the program is run while your system is connected to the internet, Java Web Start will automatically check to insure you have the most current version of the program. If a newer version is available, the new version will be run instead of the old version. To be notified when new versions are available and what their features and changes are send a request to Rich Stankewitz to be added to the Julia mailing list.

Installation Link and Code

Due to a recent change in java we have had to adapt Julia 2.0 to run with the new system. Please click the link below to install the new version that should run without problems.

Launch Julia 2.1

Code available at http://code.google.com/p/julia/. You can also Download and Install the old Julia 1.0 version by clicking here.

General Program Features

The Julia interface looks like this:

The left hand panel contains input functions of one of 5 types: complex linear, complex cubic, complex Mobius, complex quadratic, or real affline linear. Add a new function to the input functions list using the Add a function button.

To produce output sets for viewing in the center graph, select one or more input functions (Control+click selects multiple functions) and hit the one of the buttons in the "Create Set" section. You may create Julia and Attractor sets using either the Random method or the Full method.

Output will appear in the center graph and the sets of points produced are listed down the right hand side of the program.

Help

Help files which describe in details the features and how to use them are currently available here.

Maintenence

Version 2.0

Items to be added in the future:

Expand the list of allowable map types (see http://rstankewitz.iweb.bsu.edu/JuliaHelp2.0/AllowableMaps.htm).
Allow parameters to be used when defining functions so that when the parameter value changes, so do all the corresponding maps.
Create Input Functions which are compositions of different allowable maps.
For Random methods allow the probabilities to be set by the user (right now these probabilities are all uniform).

If you encounter an error that is not listed here, or wish to make a suggestion for improvement, please email Rich Stankewitz.

Credits

Julia 1.0 was first developed by Team Motivity and Rich Stankewitz of Ball State University and then further developed into Julia 2.0 by Wendy Conatser, Sida Qiu, and Ben Dean.

Team Motivity (a group of undergraduate students at Ball State University) consisted of:

Wendy Conatser
Trey Butz
Yun Li
Kristopher Hart

Softpedia labs product certification

"Julia" has been tested in the Softpedia labs using several industry-leading security solutions and found to be completely clean of adware/spyware components. We are impressed with the quality of your product and encourage you to keep these high standards in the future. More information about this product's certification and the award is available on this page: http://mac.softpedia.com/progClean/Julia-Clean-69552.html

Questions and Comments

Questions and comments are welcome and should be sent to Rich Stankewitz. Please include the word "Julia" in the subject line of any correspondence.