Tetrad IV Download Site
From this page you may launch release and development versions of Tetrad. For more information about Tetrad project or previous versions of Tetrad, see the Tetrad Project Page.
Software Requirements
You must have Jave Runtime Environment 1.6 or higher installed on your computer. (The full SDK will of course do as well.) Instructions for downloading and latest Java JRE can be found at this link:
Tetrad IV uses Java Web Start to launch. If you install JRE 1.6 or higher on a Windows or Linux machine, Java Web Start will be installed for you automatically. On a 64 bit Mac, JRE 1.6 is available though system update.
Download
Once you have a proper JRE installed on your machine, you can launch the version of Tetrad you want by clicking on one of the links below:
Launch Tetrad 4.3.10-4 - Stable
Launch Tetrad 4.3.10-3 - Previous version.
For other versions, peruse this directory:
Note: Tetrad will no longer be posted under JDK 1.5. The last version that will run under JDK 1.5 is 4.3.10-2, in the 'launchers' directory, above.
You should be able to launch any of these .jnlp files by clicking on them, unless Java didn't set up your browser correctly. Once you've downloaded and launched the version you want using Java Web Start, you do not need to download it again. You can:
- Find the launcher again on the website and double click it;
- Make a shortcut to it using Java Web Start and double click the shortcut; or,
- Use the Java Web Start Console to launch it again.
Whichever method you use, the cached version will be launched.
Here is a PDF of the new Tetrad manual:
(The old one is here.)
If you'd like some example data sets and such to try out with Tetrad, here are a few:
Also, if you'd like to look at an earlier build for some reason and know how to launch executable jars,* you are welcome to peruse our download directory.
Tetrad versions should be backwards compatible, but sometimes they aren't. For information about which version of Tetrad you are running and the version and date of last session you loaded in, select "Versioning Info" from the File menu. If you need a different version of Tetrad, go to the Launchers directory and double click its launcher, then reload the session.
Distribution
The source code for this project is distributed under the GNU GPL license. Distributions are included in the download directory; these are the zip files with the prefix "tetraddist". (These used to be in a separate directory.)
Special Instructions
Instructions on how to run the IMaGES/LOFS algorithm, these can be found here.
Suggestions
To report bugs or suggest improvements, please post a message on the following Google group:
http://groups.google.com/group/tetrad-users-group
*To launch an executable jar foo.jar, type "java -jar foo.jar" at the command line. If it doesn't work, then probably the right version of Java is not on your path.