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/* ===========================================================
* 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.]
*
* --------------------
* TimeSeriesDemo5.java
* --------------------
* (C) Copyright 2001-2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: TimeSeriesDemo5.java,v 1.12 2004/04/26 19:12:03 taqua Exp $
*
* Changes (from 24-Apr-2002)
* --------------------------
* 24-Apr-2002 : Added standard header (DG);
* 10-Oct-2002 : Renamed JFreeChartDemo2 --> TimeSeriesDemo5 (DG);
*
*/
package org.jfree.chart.demo;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.SeriesException;
import org.jfree.data.time.Day;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
/**
* A time series chart with 4000 data points, to get an idea of how JFreeChart performs with a
* larger dataset. You can see that it slows down significantly, so this needs to be worked on
* (4000 points is not that many!).
*
*/
public class TimeSeriesDemo5 extends ApplicationFrame {
/**
* Creates a new demo instance.
*
* @param title the frame title.
*/
public TimeSeriesDemo5(final String title) {
super(title);
final XYDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
chartPanel.setMouseZoomable(true, false);
setContentPane(chartPanel);
}
/**
* Creates a sample dataset.
*
* @return A sample dataset.
*/
private XYDataset createDataset() {
final TimeSeries series = new TimeSeries("Random Data");
Day current = new Day(1, 1, 1990);
double value = 100.0;
for (int i = 0; i < 4000; i++) {
try {
value = value + Math.random() - 0.5;
series.add(current, new Double(value));
current = (Day) current.next();
}
catch (SeriesException e) {
System.err.println("Error adding to series");
}
}
return new TimeSeriesCollection(series);
}
/**
* Creates a sample chart.
*
* @param dataset the dataset.
*
* @return A sample chart.
*/
private JFreeChart createChart(final XYDataset dataset) {
return ChartFactory.createTimeSeriesChart(
"Test",
"Day",
"Value",
dataset,
false,
false,
false
);
}
// ****************************************************************************
// * 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 application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final String title = "\u20A2\u20A2\u20A2\u20A3\u20A4\u20A5\u20A6\u20A7\u20A8\u20A9\u20AA";
final TimeSeriesDemo5 demo = new TimeSeriesDemo5(title);
demo.pack();
RefineryUtilities.positionFrameRandomly(demo);
demo.setVisible(true);
}
}
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jfreechart-1.0.0-rc1.zip( 3,559 k)
