Múltiplas linhas de regressão jFreeChart

Assuntos Gerais
#1

Galera, preciso de um help para colocar mais de uma linha de regressão em um gráfico.

Segue o código DEMO do jFreeChart que adiciona a linha de regressão.

[code]package demo;

import java.awt.;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.function.LineFunction2D;
import org.jfree.data.function.PowerFunction2D;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.data.statistics.Regression;
import org.jfree.data.xy.;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class RegressionDemo1 extends ApplicationFrame
{
static class DemoPanel extends JPanel
{

            private XYDataset data1;

            private XYDataset createSampleData1()
            {
                    XYSeries xyseries = new XYSeries("Series 1");
                    xyseries.add(2D, 56.270000000000003D);
                    xyseries.add(3D, 41.32D);
                    xyseries.add(4D, 31.449999999999999D);
                    xyseries.add(5D, 30.050000000000001D);
                    xyseries.add(6D, 24.690000000000001D);
                    xyseries.add(7D, 19.780000000000001D);
                    xyseries.add(8D, 20.940000000000001D);
                    xyseries.add(9D, 16.73D);
                    xyseries.add(10D, 14.210000000000001D);
                    xyseries.add(11D, 12.44D);
                    XYSeriesCollection xyseriescollection = new XYSeriesCollection(xyseries);
                    return xyseriescollection;
            }

            private JTabbedPane createContent()
            {
                    JTabbedPane jtabbedpane = new JTabbedPane();
                    jtabbedpane.add("Linear", createChartPanel1());
                    jtabbedpane.add("Power", createChartPanel2());
                    return jtabbedpane;
            }

            private ChartPanel createChartPanel1()
            {
                    NumberAxis numberaxis = new NumberAxis("X");
                    numberaxis.setAutoRangeIncludesZero(false);
                    NumberAxis numberaxis1 = new NumberAxis("Y");
                    numberaxis1.setAutoRangeIncludesZero(false);
                    XYLineAndShapeRenderer xylineandshaperenderer = new XYLineAndShapeRenderer(false, true);
                    XYPlot xyplot = new XYPlot(data1, numberaxis, numberaxis1, xylineandshaperenderer);
                    double ad[] = Regression.getOLSRegression(data1, 0);
                    LineFunction2D linefunction2d = new LineFunction2D(ad[0], ad[1]);
                    XYDataset xydataset = DatasetUtilities.sampleFunction2D(linefunction2d, 2D, 11D, 100, "Fitted Regression Line");
                    xyplot.setDataset(1, xydataset);
                    XYLineAndShapeRenderer xylineandshaperenderer1 = new XYLineAndShapeRenderer(true, false);
                    xylineandshaperenderer1.setSeriesPaint(0, Color.blue);
                    xyplot.setRenderer(1, xylineandshaperenderer1);
                    JFreeChart jfreechart = new JFreeChart("Linear Regression", JFreeChart.DEFAULT_TITLE_FONT, xyplot, true);
                    ChartPanel chartpanel = new ChartPanel(jfreechart, false);
                    return chartpanel;
            }

            private ChartPanel createChartPanel2()
            {
                    NumberAxis numberaxis = new NumberAxis("X");
                    numberaxis.setAutoRangeIncludesZero(false);
                    NumberAxis numberaxis1 = new NumberAxis("Y");
                    numberaxis1.setAutoRangeIncludesZero(false);
                    XYLineAndShapeRenderer xylineandshaperenderer = new XYLineAndShapeRenderer(false, true);
                    XYPlot xyplot = new XYPlot(data1, numberaxis, numberaxis1, xylineandshaperenderer);
                    double ad[] = Regression.getPowerRegression(data1, 0);
                    PowerFunction2D powerfunction2d = new PowerFunction2D(ad[0], ad[1]);
                    XYDataset xydataset = DatasetUtilities.sampleFunction2D(powerfunction2d, 2D, 11D, 100, "Fitted Regression Line");
                    XYLineAndShapeRenderer xylineandshaperenderer1 = new XYLineAndShapeRenderer(true, false);
                    xylineandshaperenderer1.setSeriesPaint(0, Color.blue);
                    xyplot.setDataset(1, xydataset);
                    xyplot.setRenderer(1, xylineandshaperenderer1);
                    JFreeChart jfreechart = new JFreeChart("Power Regression", JFreeChart.DEFAULT_TITLE_FONT, xyplot, true);
                    ChartPanel chartpanel = new ChartPanel(jfreechart, false);
                    return chartpanel;
            }

            public DemoPanel()
            {
                    super(new BorderLayout());
                    data1 = createSampleData1();
                    add(createContent());
            }
    }


    public RegressionDemo1(String s)
    {
            super(s);
            JPanel jpanel = createDemoPanel();
            getContentPane().add(jpanel);
    }

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

    public static void main(String args[])
    {
            RegressionDemo1 regressiondemo1 = new RegressionDemo1("Regression Demo 1");
            regressiondemo1.pack();
            RefineryUtilities.centerFrameOnScreen(regressiondemo1);
            regressiondemo1.setVisible(true);
    }

}[/code]

Vlw

#2