Adding to a Plot

andyt · Post by **andyt** » Fri Oct 27, 2006 6:08 pm

Hi,

Just started using JFreeChart.

How to add a line to a ScatterPlot?

I have tried generating the image of the ScatterPlot and using it as background to a XYLineChart.

Maybe I need to follow what ChartFactory is doing and customise.

Thanks for any pointers,

Andy

Post by **david.gilbert** » Mon Oct 30, 2006 2:39 pm

If you have the JFreeChart Developer Guide, take a look at RegressionDemo1.java, which adds a regression line to a set of points.

Otherwise, the approach is to add two datasets to the plot, and also two renderers (one an XYLineAndShapeRenderer that displays only shapes, the other an XYLineAndShapeRenderer that displays only lines).

andyt · Post by **andyt** » Tue Oct 31, 2006 12:59 pm

Many thanks for the pointer David... It worked for me