regressiondemo1.java

Jfreechart 源码例子 是和jfreechart development Guide文档相配套的

package demo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
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.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class RegressionDemo1 extends ApplicationFrame
{
  public RegressionDemo1(String paramString)
  {
    super(paramString);
    JPanel localJPanel = createDemoPanel();
    getContentPane().add(localJPanel);
  }

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

  public static void main(String[] paramArrayOfString)
  {
    RegressionDemo1 localRegressionDemo1 = new RegressionDemo1("JFreeChart: Regression Demo 1");
    localRegressionDemo1.pack();
    RefineryUtilities.centerFrameOnScreen(localRegressionDemo1);
    localRegressionDemo1.setVisible(true);
  }

  static class MyDemoPanel extends DemoPanel
  {
    private XYDataset data1;

    public MyDemoPanel()
    {
      super(new BorderLayout());
      this.data1 = createSampleData1();
      add(createContent());
    }

    private XYDataset createSampleData1()
    {
      XYSeries localXYSeries = new XYSeries("Series 1");
      localXYSeries.add(2.0D, 56.270000000000003D);
      localXYSeries.add(3.0D, 41.32D);
      localXYSeries.add(4.0D, 31.449999999999999D);
      localXYSeries.add(5.0D, 30.050000000000001D);
      localXYSeries.add(6.0D, 24.690000000000001D);
      localXYSeries.add(7.0D, 19.780000000000001D);
      localXYSeries.add(8.0D, 20.940000000000001D);
      localXYSeries.add(9.0D, 16.73D);
      localXYSeries.add(10.0D, 14.210000000000001D);
      localXYSeries.add(11.0D, 12.44D);
      XYSeriesCollection localXYSeriesCollection = new XYSeriesCollection(localXYSeries);
      return localXYSeriesCollection;
    }

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

    private ChartPanel createChartPanel1()
    {
      NumberAxis localNumberAxis1 = new NumberAxis("X");
      localNumberAxis1.setAutoRangeIncludesZero(false);
      NumberAxis localNumberAxis2 = new NumberAxis("Y");
      localNumberAxis2.setAutoRangeIncludesZero(false);
      XYLineAndShapeRenderer localXYLineAndShapeRenderer1 = new XYLineAndShapeRenderer(false, true);
      XYPlot localXYPlot = new XYPlot(this.data1, localNumberAxis1, localNumberAxis2, localXYLineAndShapeRenderer1);
      double[] arrayOfDouble = Regression.getOLSRegression(this.data1, 0);
      LineFunction2D localLineFunction2D = new LineFunction2D(arrayOfDouble[0], arrayOfDouble[1]);
      XYDataset localXYDataset = DatasetUtilities.sampleFunction2D(localLineFunction2D, 2.0D, 11.0D, 100, "Fitted Regression Line");
      localXYPlot.setDataset(1, localXYDataset);
      XYLineAndShapeRenderer localXYLineAndShapeRenderer2 = new XYLineAndShapeRenderer(true, false);
      localXYLineAndShapeRenderer2.setSeriesPaint(0, Color.blue);
      localXYPlot.setRenderer(1, localXYLineAndShapeRenderer2);
      JFreeChart localJFreeChart = new JFreeChart("Linear Regression", JFreeChart.DEFAULT_TITLE_FONT, localXYPlot, true);
      ChartUtilities.applyCurrentTheme(localJFreeChart);
      addChart(localJFreeChart);
      ChartPanel localChartPanel = new ChartPanel(localJFreeChart, false);
      return localChartPanel;
    }

    private ChartPanel createChartPanel2()
    {
      NumberAxis localNumberAxis1 = new NumberAxis("X");
      localNumberAxis1.setAutoRangeIncludesZero(false);
      NumberAxis localNumberAxis2 = new NumberAxis("Y");
      localNumberAxis2.setAutoRangeIncludesZero(false);
      XYLineAndShapeRenderer localXYLineAndShapeRenderer1 = new XYLineAndShapeRenderer(false, true);
      XYPlot localXYPlot = new XYPlot(this.data1, localNumberAxis1, localNumberAxis2, localXYLineAndShapeRenderer1);
      double[] arrayOfDouble = Regression.getPowerRegression(this.data1, 0);
      PowerFunction2D localPowerFunction2D = new PowerFunction2D(arrayOfDouble[0], arrayOfDouble[1]);
      XYDataset localXYDataset = DatasetUtilities.sampleFunction2D(localPowerFunction2D, 2.0D, 11.0D, 100, "Fitted Regression Line");
      XYLineAndShapeRenderer localXYLineAndShapeRenderer2 = new XYLineAndShapeRenderer(true, false);
      localXYLineAndShapeRenderer2.setSeriesPaint(0, Color.blue);
      localXYPlot.setDataset(1, localXYDataset);
      localXYPlot.setRenderer(1, localXYLineAndShapeRenderer2);
      JFreeChart localJFreeChart = new JFreeChart("Power Regression", JFreeChart.DEFAULT_TITLE_FONT, localXYPlot, true);
      ChartUtilities.applyCurrentTheme(localJFreeChart);
      addChart(localJFreeChart);
      ChartPanel localChartPanel = new ChartPanel(localJFreeChart, false);
      return localChartPanel;
    }
  }
}