[JFreeChart] Creer diagramme en pyramide

C bon j'ai trouver quelque chose en cherchant. :yaisse2:

Pour ceux que ca interresse, voici ce que j'ai trouvé :

Post de David Gilbert, sur le forum de jfree.org
Code:
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package org.jfree.chart.demo;
 
import org.jfree.chart.JFreeChart;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.data.DefaultKeyedValues2DDataset;
import org.jfree.data.KeyedValues2DDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
/**
 * A population pyramid demo.
 *
 * @author David Gilbert
 */
public class PopulationChartDemo extends ApplicationFrame {
 
    /**
     * Creates a new demo.
     *
     * @param title  the frame title.
     */
    public PopulationChartDemo(String title) {
 
        super(title);
        KeyedValues2DDataset dataset = createDataset();
 
        // create the chart...
        JFreeChart chart = ChartFactory.createStackedHorizontalBarChart(
                                                  "Population Chart Demo",
                                                  "Age Group",     // domain axis label
                                                  "Population (millions)", // range axis label
                                                  dataset,         // data
                                                  true,            // include legend
                                                  true,            // tooltips
                                                  false            // urls
                                              );
 
        CategoryPlot plot = chart.getCategoryPlot();
 
        // add the chart to a panel...
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);
 
    }
 
    /**
    *
    */
   private KeyedValues2DDataset createDataset() {
 
        DefaultKeyedValues2DDataset data = new DefaultKeyedValues2DDataset();
      data.addValue( -6.0, "Male", "70+");
      data.addValue( -8.0, "Male", "60-69");
      data.addValue(-11.0, "Male", "50-59");
      data.addValue(-13.0, "Male", "40-49");
      data.addValue(-14.0, "Male", "30-39");
      data.addValue(-15.0, "Male", "20-29");
      data.addValue(-19.0, "Male", "10-19");
      data.addValue(-21.0, "Male", "0-9");
      data.addValue(10.0, "Female", "70+");
      data.addValue(12.0, "Female", "60-69");
      data.addValue(13.0, "Female", "50-59");
      data.addValue(14.0, "Female", "40-49");
      data.addValue(15.0, "Female", "30-39");
      data.addValue(17.0, "Female", "20-29");
      data.addValue(19.0, "Female", "10-19");
      data.addValue(20.0, "Female", "0-9");
      return data;
 
   }
 
   /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {
 
        PopulationChartDemo demo = new PopulationChartDemo("Population Chart Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
 
    }
 
}