The Panoply "Generic" package is for computers not running the Mac OS X or Windows operating system. Panoply requires that a Java 1.4 virtual machine, or better, be installed. Install and Run Panoply Depending on your operating system and how you have it set up, installing Panoply may be as simple as double-clicking the PanoplyJ archive icon on your desktop. If not, then you may have to use the appropriate command-line call from the shell. The Panoply archive contains a folder called PanoplyJ which holds the following items: * The Panoply.jar file * Colorbars (color tables) in a folder called "colorbars". * Continent masks and outlines in a folder called "overlays". * A README file. Again, depending on your operating system, you may be able to launch Panoply by simply double-clicking on the Panoply.jar file. But if that desn't work, then you would need to launch from a shell command line by typing: java -jar Panoply.jar If you expect to deal with a high-resolution dataset - for example a lon-lat array gridded at finer than 1ø resolution - then you should change the above command to include an option instruction to Java to use more memory. The following should suffice: java -Xmx128m -jar Panoply.jar That will grab 128 MB of memory rather than the default 64 MB. If you have memory to burn then you might up the limit to 256 MB via: java -Xmx256m -jar Panoply.jar http://www.giss.nasa.gov/tools/panoply/