www.ilpiola.it
Roberto Piola
Work
Freebies

JChart

Note: Rogue Wave Software produces another package with the same name; I was unaware of that when I developed the first version of my program; probably I'll change the name in the next version; for the moment, please refer to my code as piola.jchart

What's JChart?

JChart is a good piece of code by Roberto Piola ;-) ; it was born as an applet for displaying some data on a web page, in a manner similar to what gnuplot does on any machine (and M$ Excel does on a PC): histograms, plots, and so on.

You can see a demonstration of its capabilities in the demo page.

In the following, I manipulated the code and I extended it, reducing the core of JChart to a reusable component, and obtaining an applet and a stand-alone application as by-products. The data can be passed as a file name, as a data structure or as an URL, and they can be visualized in several alternative ways.

Using JChart

The component classes are released in Java byte-code form for personal use, and NOT for commercial use. If you need the source code for personal use, you MUST sign a non-disclosure agreement and send it via fax at +39(0)11 3473522. If you want to use my program for making money, it will cost you 200 US$; in this case, or if you need a modified version, you should contact me.

Download

jchart11.zip (version 1.1, released on 17.11.1997; includes the component classes, the docs and the source code for a sample application and a sample applet).

The documentation is available online.