Balloonchart

[CyberMaarten]

I don't know if it's the official word for it, but I mean something like this:



More exactly, I'm looking for a chart class which you can add transparent 3D balloons to, with position, size, and color as parameters. I've searched this forum and googled for it, but I didn't find it.

Does it already exist? If not, any ideas how to develop it (which class to extend, how to create a balloon)?

Tia!

[John Matthews]

You might see if org.jfree.chart.renderer.xy.XYBubbleRenderer can use org.gcs.kinetic.RadialGradientPaint.

[ascharnweber]

This may also be of interest: 4D BubbleChart with JFreeChart
http://www.plainagile.com/archives/215

Kind regards,
Alexander

[CyberMaarten]

Thank you both for your response!

The 4D bubblechart is exactly what the result should be. Unfortunetaly, the chart has to be produced on a previous version of Websphere, which runs JDK 1.5. The 3D (or 4D ) bubbles are painted with the RadialGradientPaint class, which is JDK 1.6. But of course I can try to find a workaround - the most important thing is that the circles are semi-transparent.

[John Matthews]

RadialGradientPaint class, which is JDK 1.6

The class java.awt.RadialGradientPaint is JDK 1.6; org.gcs.kinetic.RadialGradientPaint is JDK 1.5; the license was recently changed to LGPL for compatibility with JFreeChart.

[CyberMaarten]

John, that's great. I looked at your code and it's neat.

I'll do as you say and try it to use it with XYBubbleRenderer.