overlaidbarchartdemo1.java

在软件开发中用来绘制各种图表的源码

/* -------------------------
 * OverlaidBarChartDemo1.java
 * -------------------------
 * (C) Copyright 2002-2005, by Object Refinery Limited.
 */

package demo;

import javax.swing.JPanel;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.labels.CategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A simple demonstration application showing how to create a bar chart overlaid
 * with a line chart.
 */
public class OverlaidBarChartDemo1 extends ApplicationFrame {

    /**
     * Default constructor.
     *
     * @param title  the frame title.
     */
    public OverlaidBarChartDemo1(String title) {

        super(title);
        JPanel chartPanel = createDemoPanel();
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);

    }
    
    /**
     * Creates a demo chart.
     * 
     * @return A chart.
     */
    public static JFreeChart createChart() {
        // create the first dataset...
        DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
        dataset1.addValue(1.0, "S1", "Category 1");
        dataset1.addValue(4.0, "S1", "Category 2");
        dataset1.addValue(3.0, "S1", "Category 3");
        dataset1.addValue(5.0, "S1", "Category 4");
        dataset1.addValue(5.0, "S1", "Category 5");
        dataset1.addValue(7.0, "S1", "Category 6");
        dataset1.addValue(7.0, "S1", "Category 7");
        dataset1.addValue(8.0, "S1", "Category 8");

        dataset1.addValue(5.0, "S2", "Category 1");
        dataset1.addValue(7.0, "S2", "Category 2");
        dataset1.addValue(6.0, "S2", "Category 3");
        dataset1.addValue(8.0, "S2", "Category 4");
        dataset1.addValue(4.0, "S2", "Category 5");
        dataset1.addValue(4.0, "S2", "Category 6");
        dataset1.addValue(2.0, "S2", "Category 7");
        dataset1.addValue(1.0, "S2", "Category 8");

        // create the first renderer...
        CategoryItemLabelGenerator generator 
            = new StandardCategoryItemLabelGenerator();
        CategoryItemRenderer renderer = new BarRenderer();
        renderer.setItemLabelGenerator(generator);
        renderer.setItemLabelsVisible(true);
        
        CategoryPlot plot = new CategoryPlot();
        plot.setDataset(dataset1);
        plot.setRenderer(renderer);
        
        plot.setDomainAxis(new CategoryAxis("Category"));
        plot.setRangeAxis(new NumberAxis("Value"));

        plot.setOrientation(PlotOrientation.VERTICAL);
        plot.setRangeGridlinesVisible(true);
        plot.setDomainGridlinesVisible(true);

        // now create the second dataset and renderer...
        DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
        dataset2.addValue(9.0, "T1", "Category 1");
        dataset2.addValue(7.0, "T1", "Category 2");
        dataset2.addValue(2.0, "T1", "Category 3");
        dataset2.addValue(6.0, "T1", "Category 4");
        dataset2.addValue(6.0, "T1", "Category 5");
        dataset2.addValue(9.0, "T1", "Category 6");
        dataset2.addValue(5.0, "T1", "Category 7");
        dataset2.addValue(4.0, "T1", "Category 8");

        CategoryItemRenderer renderer2 = new LineAndShapeRenderer();
        plot.setDataset(1, dataset2);
        plot.setRenderer(1, renderer2);

        // create the third dataset and renderer...
        ValueAxis rangeAxis2 = new NumberAxis("Axis 2");
        plot.setRangeAxis(1, rangeAxis2);

        DefaultCategoryDataset dataset3 = new DefaultCategoryDataset();
        dataset3.addValue(94.0, "R1", "Category 1");
        dataset3.addValue(75.0, "R1", "Category 2");
        dataset3.addValue(22.0, "R1", "Category 3");
        dataset3.addValue(74.0, "R1", "Category 4");
        dataset3.addValue(83.0, "R1", "Category 5");
        dataset3.addValue(9.0, "R1", "Category 6");
        dataset3.addValue(23.0, "R1", "Category 7");
        dataset3.addValue(98.0, "R1", "Category 8");

        plot.setDataset(2, dataset3);
        CategoryItemRenderer renderer3 = new LineAndShapeRenderer();
        plot.setRenderer(2, renderer3);
        plot.mapDatasetToRangeAxis(2, 1);

        // change the rendering order so the primary dataset appears "behind" the 
        // other datasets...
        plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
        
        plot.getDomainAxis().setCategoryLabelPositions(CategoryLabelPositions.UP_45);
        JFreeChart chart = new JFreeChart(plot);
        chart.setTitle("Overlaid Bar Chart");
        return chart;
    }
    
    /**
     * Creates a panel for the demo (used by SuperDemo.java).
     * 
     * @return A panel.
     */
    public static JPanel createDemoPanel() { 
        JFreeChart chart = createChart();
        return new ChartPanel(chart);
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        OverlaidBarChartDemo1 demo = new OverlaidBarChartDemo1(
            "Overlaid Bar Chart Demo"
        );
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}