Dynamic Stacked Area Chart

[Cambridge]

Dynamic Stacked Area Chart

The following is a link to a web page with a demo of a
stacked area chart:

http://www.java2s.com/Code/Java/Chart/J ... rtDemo.htm



The code is provided, but it's for a static CategoryDataset, created
using DatasetUtilities.createCategoryDataset(...).

It's a great example, but I need to be able to change the graph
dynamically. The CategoryDataset doesn't let you change anything.

Is there any way to make this dynamic?

If there's no way to change the dataset, is there any way to make
a call that replaces the dataset entirely in the chart?

Thanks,

John

[John Matthews]

One of my favorite things about JFreeChart is linksource="yes" in build.xml, but I digress. Internally, DatasetUtilities.createCategoryDataset() constructs a DefaultCategoryDataset, which is eminently mutable. I'd say cast the return value or construct your own.

[reivilo59]

Hi,

I have the same problem, and I don't find any solution.
Have you find a solution for dynamic stacked area chart ?

Thank's

[John Matthews]

I started from the example cited and cast the dataset as suggested:

Code: Select all

DefaultCategoryDataset dataset = (DefaultCategoryDataset) createDataset();

I added a suitable Action:

Code: Select all

add(chartPanel);
add(new JButton(new AbstractAction("Add") {

	@Override
	public void actionPerformed(ActionEvent e) {
		dataset.addValue(Math.random() * 42, "Row", "Added");
	}
}), BorderLayout.PAGE_END);

I see a result similar to this image: