Bubble Charts in JFreeChart

[stephen.l.long]

I need to simply modify the current bubble chart in JFreeChart to use a
time axis instead of the data axis. Is anyone aware of how to do this?
I have been working on this problem for a while now and each way I
have tried causes conflicts with other parts of JFreeChart. I am
relatively new to this and any help at all would be greatly appreciated.

 

[Andrew Thompson]

..Is anyone aware of how to do this?

...maybe the guy that was asking about this over on c.l.j.help.
<http://www.physci.org/codes/javafaq.jsp#xpost>

 

[David Gilbert]

I need to simply modify the current bubble chart in JFreeChart to use a
time axis instead of the data axis. Is anyone aware of how to do this?
I have been working on this problem for a while now and each way I
have tried causes conflicts with other parts of JFreeChart. I am
relatively new to this and any help at all would be greatly appreciated.

You can just replace the domain axis, something like this:

XYPlot plot = (XYPlot) chart.getPlot();
plot.setDomainAxis(new DateAxis("Date"));

Note that now the axis will interpret your x-values as "milliseconds
since 1-Jan-1970" (the way that java.util.Date does), so you will
probably need to change the values in your dataset accordingly.

Regards,

Dave Gilbert
JFreeChart Project Leader