JFreeChart help

Hey there, I'm having some trouble with the ThermometerPlot in JFreeChart. Basically all I want to do is find the XY-value of where the "mercury" is currently set to on the JPanel/JFrame or what have you.

Code:

---

package smartt;

import java.awt.*;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.ThermometerPlot;
import org.jfree.data.general.DefaultValueDataset;
import org.jfree.data.general.ValueDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;

public class DepthPanel extends ApplicationFrame
{
    static class ContentPanel extends JPanel
            implements ChangeListener
    {

        JSlider slider;
        DefaultValueDataset dataset;

        private static JFreeChart createChart(ValueDataset valuedataset)
        {
            ThermometerPlot depthplot = new ThermometerPlot(valuedataset);
            JFreeChart jfreechart = new JFreeChart("Depth Chart", JFreeChart.DEFAULT_TITLE_FONT, depthplot, true);
            depthplot.setInsets(new RectangleInsets(5D, 5D, 5D, 5D));
            depthplot.setPadding(new RectangleInsets(10D, 10D, 10D, 10D));
            depthplot.setThermometerStroke(new BasicStroke(2.0F));
            depthplot.setThermometerPaint(Color.lightGray);
            depthplot.setBulbRadius(0);
            depthplot.setUnits(ThermometerPlot.UNITS_NONE);
            depthplot.setGap(5);
            depthplot.setUpperBound(0);
            depthplot.setLowerBound(-1500);
            System.out.println(depthplot.getRangeAxis().toString());

            return jfreechart;
        }

        public void stateChanged(ChangeEvent changeevent)
        {
            dataset.setValue(new Integer(slider.getValue()));
        }

        public ContentPanel()
        {
            super(new BorderLayout());
            slider = new JSlider(-1500, 0);
            slider.setPaintLabels(true);
            slider.setPaintTicks(true);
            slider.setMajorTickSpacing(100);
            slider.addChangeListener(this);
            add(slider, "South");
            dataset = new DefaultValueDataset(slider.getValue());
            add(new ChartPanel(createChart(dataset)));
        }
    }
       
       


        public DepthPanel(String s)
        {
            super(s);
            JPanel jpanel = createDemoPanel();
            setContentPane(jpanel);
        }

        public static JPanel createDemoPanel()
        {
            return new ContentPanel();
        }

        public static void main(String args[])
        {
            DepthPanel thermometerdemo1 = new DepthPanel("Depth");
            thermometerdemo1.pack();
            thermometerdemo1.setVisible(true);
        }
}

---

Could you explain where your problems are in the code? I don't see any comments saying *** HERE ***
or any reference to "mercury".

My bad, by "mercury" I just meant the the rounded rectangle that is used to denote what the current temperature is which is currently set by the slider. And it's not so much that there's a problem in the code but just a lack of knowledge on my part on how to retrieve the dimensions/location of that rounded rectangle or just the XY-value of top of that rectangle on the JPanel. Everything I've tried (trying to get ChartRenderingInfo/methods in ThermometerPlot or Plot) has been a dead end but I may have missed something in there. The code above is just a demonstration of what I'm talking about.

Could you execute the program, take a screen shot and note on the image what values you are looking for?

http://i55.tinypic.com/2v9xiyv.jpg

What jar file do you need to compile the above code?

Have you read the API doc for the JFreeChart classes? I would think there are methods or callbacks or listeners to use to give you the info you want.

Just JFreeChart and JCommon http://sourceforge.net/projects/jfreechart/files/. And I've gone through all of the applicable API docs for ThermometerPlot to no avail.

How does ThermometerPlot use the ValueDataset value?
That appears to be connected to the slider which sends the data that controls the height of the column being displayed.

How does ThermometerPlot use the ValueDataset value?
That appears to be connected to the slider which sends the data that controls the height of the column being displayed.