timeseriesdemo3.java

Web图形化的Java库

/* ======================================
 * JFreeChart : a free Java chart library
 * ======================================
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * 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.
 *
 * --------------------
 * TimeSeriesDemo3.java
 * --------------------
 * (C) Copyright 2002, 2003, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: TimeSeriesDemo3.java,v 1.5 2003/07/07 11:01:16 mungady Exp $
 *
 * Changes
 * -------
 * 06-Aug-2002 : Version 1 (DG);
 * 11-Oct-2002 : Fixes issues reported by Checkstyle (DG);
 *
 */

package org.jfree.chart.demo;

import java.text.SimpleDateFormat;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.DateTickUnit;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.StandardXYItemRenderer;
import org.jfree.data.XYDataset;
import org.jfree.data.time.Month;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A time series demo, with monthly data, where the tick unit on the axis is set to
 * one month also (this switches off the auto tick unit selection, and *can* result in
 * overlapping labels).
 *
 * @author David Gilbert
 */
public class TimeSeriesDemo3 extends ApplicationFrame {

    /**
     * A demonstration application showing a quarterly time series containing a null value.
     *
     * @param title  the frame title.
     */
    public TimeSeriesDemo3(String title) {

        super(title);

        TimeSeries series1 = new TimeSeries("Series 1", Month.class);
        series1.add(new Month(1, 2002), 500.2);
        series1.add(new Month(2, 2002), 694.1);
        series1.add(new Month(3, 2002), 734.4);
        series1.add(new Month(4, 2002), 453.2);
        series1.add(new Month(5, 2002), 500.2);
        series1.add(new Month(6, 2002), 345.6);
        series1.add(new Month(7, 2002), 500.2);
        series1.add(new Month(8, 2002), 694.1);
        series1.add(new Month(9, 2002), 734.4);
        series1.add(new Month(10, 2002), 453.2);
        series1.add(new Month(11, 2002), 500.2);
        series1.add(new Month(12, 2002), 345.6);

        TimeSeries series2 = new TimeSeries("Series 2", Month.class);
        series2.add(new Month(1, 2002), 234.1);
        series2.add(new Month(2, 2002), 623.7);
        series2.add(new Month(3, 2002), 642.5);
        series2.add(new Month(4, 2002), 651.4);
        series2.add(new Month(5, 2002), 643.5);
        series2.add(new Month(6, 2002), 785.6);
        series2.add(new Month(7, 2002), 234.1);
        series2.add(new Month(8, 2002), 623.7);
        series2.add(new Month(9, 2002), 642.5);
        series2.add(new Month(10, 2002), 651.4);
        series2.add(new Month(11, 2002), 643.5);
        series2.add(new Month(12, 2002), 785.6);

        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(series1);
        dataset.addSeries(series2);

        JFreeChart chart = createChart(dataset);
        
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);

    }

    /**
     * Creates a new chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The dataset.
     */
    private JFreeChart createChart(XYDataset dataset) {
        JFreeChart chart = ChartFactory.createTimeSeriesChart(
            "Time Series Demo 3",
            "Time",
            "Value",
            dataset,
            true,
            true,
            false
        );
        XYPlot plot = chart.getXYPlot();
        DateAxis axis = (DateAxis) plot.getDomainAxis();
        axis.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1,
                                          new SimpleDateFormat("MMM-yyyy")));
        axis.setVerticalTickLabels(true);
        
        StandardXYItemRenderer renderer = (StandardXYItemRenderer) plot.getRenderer();
        renderer.setPlotShapes(true);
        renderer.setSeriesShapesFilled(0, Boolean.TRUE);
        renderer.setSeriesShapesFilled(1, Boolean.FALSE);

        return chart;
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        TimeSeriesDemo3 demo = new TimeSeriesDemo3("Time Series Demo 3");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}