yintervalchartdemo1.java

在软件开发中用来绘制各种图表的源码

/* ------------------------
 * YIntervalChartDemo1.java
 * ------------------------
 * (C) Copyright 2003, 2004, by Object Refinery Limited.
 *
 */

package demo;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.YIntervalRenderer;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A simple demonstration application showing how to create a Y Interval Chart.
 */
public class YIntervalChartDemo1 extends ApplicationFrame {

    /**
     * Constructs the demo application.
     *
     * @param title  the frame title.
     */
    public YIntervalChartDemo1(String title) {

        super(title);
        IntervalXYDataset dataset = new SimpleIntervalXYDataset2(100);
        JFreeChart chart = createChart(dataset);
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 300));
        setContentPane(chartPanel);

    }

    /**
     * Creates a new chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The chart.
     */
    private static JFreeChart createChart(IntervalXYDataset dataset) {
    
        JFreeChart chart = ChartFactory.createScatterPlot(
            "Y Interval Chart Demo",  // chart title
            "X",                      // domain axis label
            "Y",                      // range axis label
            dataset,                  // data
            PlotOrientation.VERTICAL,
            true,                     // include legend
            true,
            false
        );

        XYPlot plot = chart.getXYPlot();
        plot.setRenderer(new YIntervalRenderer());
        
        return chart;
        
    }
    
    /**
     * Creates a panel for the demo (used by SuperDemo.java).
     * 
     * @return A panel.
     */
    public static JPanel createDemoPanel() {
        JFreeChart chart = createChart(new SimpleIntervalXYDataset2(100));
        return new ChartPanel(chart);
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        YIntervalChartDemo1 demo = new YIntervalChartDemo1("Y Interval Chart Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}