stackedbarchart3ddemo.java

在软件开发中用来绘制各种图表的源码

/* --------------------------
 * StackedBarChart3DDemo.java
 * --------------------------
 * (C) Copyright 2002-2005, by Object Refinery Limited.
 *
 */

package demo;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.TextAnchor;

/**
 * A simple demonstration application showing how to create a stacked 3D bar 
 * chart using data from a {@link CategoryDataset}.
 */
public class StackedBarChart3DDemo extends ApplicationFrame {

    /**
     * Creates a new demo.
     *
     * @param title  the frame title.
     */
    public StackedBarChart3DDemo(String title) {
        super(title);
        CategoryDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);
    }

    /**
     * Creates and returns a {@link CategoryDataset} for the demo chart.
     *
     * @return a sample dataset.
     */
    public CategoryDataset createDataset() {

        double[][] data = new double[][]
            {{10.0, 4.0, 15.0, 14.0},
             {-5.0, -7.0, 14.0, -3.0},
             {6.0, 17.0, -12.0, 7.0},
             {7.0, 15.0, 11.0, 0.0},
             {-8.0, -6.0, 10.0, -9.0},
             {9.0, 8.0, 0.0, 6.0},
             {-10.0, 9.0, 7.0, 7.0},
             {11.0, 13.0, 9.0, 9.0},
             {-3.0, 7.0, 11.0, -10.0}};

        return DatasetUtilities.createCategoryDataset("Series ", "Category ", data);

    }

    /**
     * Creates a chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The chart.
     */
    private JFreeChart createChart(CategoryDataset dataset) {

        JFreeChart chart = ChartFactory.createStackedBarChart3D(
            "Stacked Bar Chart 3D Demo",  // chart title
            "Category",                   // domain axis label
            "Value",                      // range axis label
            dataset,                      // data
            PlotOrientation.HORIZONTAL,   // the plot orientation
            true,                         // include legend
            true,                         // tooltips
            false                         // urls
        );
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        BarRenderer renderer = (BarRenderer) plot.getRenderer();
        renderer.setDrawBarOutline(false);
        renderer.setItemLabelGenerator(
            new StandardCategoryItemLabelGenerator()
        );
        renderer.setItemLabelsVisible(true);
        renderer.setPositiveItemLabelPosition(
            new ItemLabelPosition(ItemLabelAnchor.CENTER, TextAnchor.CENTER)
        );
        renderer.setNegativeItemLabelPosition(
            new ItemLabelPosition(ItemLabelAnchor.CENTER, TextAnchor.CENTER)
        );
        return chart;
        
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        StackedBarChart3DDemo demo = new StackedBarChart3DDemo("Stacked Bar Chart 3D Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}