Mega Code Archive
Chart Timing 3
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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.]
*
* -----------------
* ChartTiming3.java
* -----------------
* (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: ChartTiming3.java,v 1.15 2004/04/26 19:11:53 taqua Exp $
*
* Changes
* -------
* 29-Oct-2002 : Version 1 (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.Timer;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYDotRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
/**
* Draws a scatter plot over and over for 10 seconds. Reports on how many redraws were achieved.
* <p>
* On my PC (SuSE Linux 8.2, JDK 1.4, 256mb RAM, 2.66ghz Pentium) I get 13-14 charts per second.
*
*/
public class ChartTiming3 implements ActionListener {
/** A flag that indicates when time is up. */
private boolean finished;
/**
* Creates a new application.
*/
public ChartTiming3() {
// nothing to do
}
/**
* Runs the test.
*/
public void run() {
this.finished = false;
// create a dataset...
final XYSeries series = new XYSeries("Random Data");
for (int i = 0; i < 1440; i++) {
final double x = Math.random();
final double y = Math.random();
series.add(x, y);
}
final XYDataset data = new XYSeriesCollection(series);
// create a scatter chart...
final boolean withLegend = true;
final JFreeChart chart = ChartFactory.createScatterPlot(
"Scatter plot timing", "X", "Y",
data,
PlotOrientation.VERTICAL,
withLegend,
false,
false
);
final XYPlot plot = chart.getXYPlot();
plot.setRenderer(new XYDotRenderer());
final BufferedImage image = new BufferedImage(400, 300, BufferedImage.TYPE_INT_RGB);
final Graphics2D g2 = image.createGraphics();
final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 400, 300);
// set up the timer...
final Timer timer = new Timer(10000, this);
timer.setRepeats(false);
int count = 0;
timer.start();
while (!this.finished) {
chart.draw(g2, chartArea, null, null);
System.out.println("Charts drawn..." + count);
if (!this.finished) {
count++;
}
}
System.out.println("DONE");
}
/**
* Receives notification of action events (in this case, from the Timer).
*
* @param event the event.
*/
public void actionPerformed(final ActionEvent event) {
this.finished = true;
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final ChartTiming3 app = new ChartTiming3();
app.run();
}
}
jfreechart-1.0.0-rc1.zip( 3,559 k)
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