timeseriesdemo2.java

JfreeChart 常用图表例子

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * --------------------
 * TimeSeriesDemo2.java
 * --------------------
 * (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: TimeSeriesDemo2.java,v 1.12 2004/04/26 19:12:03 taqua Exp $
 *
 * Changes
 * -------
 * 08-Apr-2002 : Version 1 (DG);
 *
 */

package org.jfree.chart.demo;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.data.time.Quarter;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A demo showing a time series (quarterly data) with a <code>null</code> value.  The
 * <code>null</code> value causes a gap in the line connecting the data points.
 *
 */
public class TimeSeriesDemo2 extends ApplicationFrame {

    /**
     * A demonstration application showing a quarterly time series containing a null value.
     *
     * @param title  the frame title.
     */
    public TimeSeriesDemo2(final String title) {

        super(title);

        final TimeSeries series = new TimeSeries("Quarterly Data", Quarter.class);
        series.add(new Quarter(1, 2001), 500.2);
        series.add(new Quarter(2, 2001), 694.1);
        series.add(new Quarter(3, 2001), 734.4);
        series.add(new Quarter(4, 2001), 453.2);
        series.add(new Quarter(1, 2002), 500.2);
        series.add(new Quarter(2, 2002), null);
        series.add(new Quarter(3, 2002), 734.4);
        series.add(new Quarter(4, 2002), 453.2);
        final TimeSeriesCollection dataset = new TimeSeriesCollection(series);
        final JFreeChart chart = ChartFactory.createTimeSeriesChart(
            "Time Series Demo 2",
            "Time", 
            "Value",
            dataset,
            true,
            true,
            false
        );
        chart.getXYPlot().addRangeMarker(new ValueMarker(550.0));
        final Quarter q = new Quarter(2, 2002);
        chart.getXYPlot().addDomainMarker(new ValueMarker(q.getMiddleMillisecond()));
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);

    }

    // ****************************************************************************
    // * JFREECHART DEVELOPER GUIDE                                               *
    // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
    // * to purchase from Object Refinery Limited:                                *
    // *                                                                          *
    // * http://www.object-refinery.com/jfreechart/guide.html                     *
    // *                                                                          *
    // * Sales are used to provide funding for the JFreeChart project - please    * 
    // * support us so that we can continue developing free software.             *
    // ****************************************************************************
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(final String[] args) {

        final TimeSeriesDemo2 demo = new TimeSeriesDemo2("Time Series Demo 2");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}