Chappati, Applet

Your browser must support Java 1.5 in order to use this applet.
To graph your data (a list or matrix of numbers), paste your data into a new data document (one will open automatically as the applet starts up, and you can always create another one using File --> New). Then use the Graph... command in the Data menu of data document in order to graph your data.
Various examples are provided under the Demo menu. They show you how your data should be formatted.
Of the two graphic engines which can be used to draw graphs, JFreeChart often gives visual results which are somewhat more polished than those produced by Chappati's own built-in graphic engine, except for contour plots.