timeseriesdemo13.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 208 行

/* ===========================================================
 * 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.]
 *
 * ---------------------
 * TimeSeriesDemo13.java
 * ---------------------
 * (C) Copyright 2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: TimeSeriesDemo13.java,v 1.4 2004/04/26 19:12:03 taqua Exp $
 *
 * Changes
 * -------
 * 11-Feb-2004 : Version 1 (DG);
 *
 */

package org.jfree.chart.demo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.text.SimpleDateFormat;

import javax.swing.JPanel;
import javax.swing.JTabbedPane;

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.axis.TickUnits;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.time.Week;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.Spacer;

/**
 * This demo shows two charts that use weekly data.  A custom tick unit collection is defined to
 * control the domain axis formatting.
 *
 */
public class TimeSeriesDemo13 extends ApplicationFrame {

    /**
     * Creates a new demo instance.
     *
     * @param title  the frame title.
     */
    public TimeSeriesDemo13(final String title) {
        
        super(title);
        
        final XYDataset dataset1 = createDataset(26);
        final JFreeChart chart1 = createChart(dataset1);
        final ChartPanel chartPanel1 = new ChartPanel(chart1);
       
        final XYDataset dataset2 = createDataset(1);
        final JFreeChart chart2 = createChart(dataset2);
        final ChartPanel chartPanel2 = new ChartPanel(chart2);
        
        final JTabbedPane tabs = new JTabbedPane();
        tabs.add("Chart 1", chartPanel1);
        tabs.add("Chart 2", chartPanel2);
        final JPanel content = new JPanel(new BorderLayout());
        content.setPreferredSize(new java.awt.Dimension(500, 270));
        content.add(tabs);
        setContentPane(content);

    }

    /**
     * Creates a chart.
     * 
     * @param dataset  a dataset.
     * 
     * @return A chart.
     */
    private JFreeChart createChart(final XYDataset dataset) {

        final JFreeChart chart = ChartFactory.createTimeSeriesChart(
            "Weekly Data",
            "Date", 
            "Value",
            dataset,
            true,
            true,
            false
        );

        chart.setBackgroundPaint(Color.white);

//        final StandardLegend sl = (StandardLegend) chart.getLegend();
  //      sl.setDisplaySeriesShapes(true);

        final XYPlot plot = chart.getXYPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
    //    plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
        plot.setDomainCrosshairVisible(true);
        plot.setRangeCrosshairVisible(true);
        
        final XYItemRenderer renderer = plot.getRenderer();
        if (renderer instanceof StandardXYItemRenderer) {
            final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
            rr.setPlotShapes(true);
            rr.setShapesFilled(true);
        }
        
        final DateAxis axis = (DateAxis) plot.getDomainAxis();
        final TickUnits standardUnits = new TickUnits();
        standardUnits.add(
            new DateTickUnit(DateTickUnit.DAY, 1, new SimpleDateFormat("MMM dd ''yy"))
        );
        standardUnits.add(
                new DateTickUnit(DateTickUnit.DAY, 7, new SimpleDateFormat("MMM dd ''yy"))
        );
        standardUnits.add(
                new DateTickUnit(DateTickUnit.MONTH, 1, new SimpleDateFormat("MMM ''yy"))
        );
        axis.setStandardTickUnits(standardUnits);
        
        return chart;

    }
    
    // ****************************************************************************
    // * 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.             *
    // ****************************************************************************
    
    /**
     * Creates a dataset containing random values at weekly intervals.
     *
     * @param items  the number of items in the dataset.
     * 
     * @return the dataset.
     */
    private XYDataset createDataset(final int items) {

        final TimeSeries s1 = new TimeSeries("Random Data", Week.class);
        RegularTimePeriod t = new Week();
        double v = 100.0;
        for (int i = 0; i < items; i++) {
            s1.add(t, v);
            v = v * (1 + ((Math.random() - 0.499) / 100.0));
            t = t.next();
        }

        final TimeSeriesCollection dataset = new TimeSeriesCollection(s1);
        dataset.setDomainIsPointsInTime(true);

        return dataset;

    }

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

        final TimeSeriesDemo13 demo = new TimeSeriesDemo13("Time Series Demo 13");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}