I have developed a set of RPG sub procedures that utilize the JFree.org API's compose pie charts, bar graphs and much more eye candy with ease from your iSeries RPG program.
Here you will find an RPG service program that I have been working on that interfaces with the JFree.org API's. The interfaces are pretty darn straight forward and restriction-less (is that a word?). As of right now there are only three (3) types of reports you can create (i.e. pie, bar, XY), but it would be quite easy to add more. If you have any questions email me at email@example.com.