Java/Chart/Dynamic Data Chart

JFreeChart: Dynamic Data Demo

   <source lang="java">

/* ===========================================================

* 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.]
*
* --------------------
* DynamicDataDemo.java
* --------------------
* (C) Copyright 2002-2004, by Object Refinery Limited.
*
* Original Author:  David Gilbert (for Object Refinery Limited).
* Contributor(s):   -;
*
* $Id: DynamicDataDemo.java,v 1.12 2004/05/07 16:09:03 mungady Exp $
*
* Changes
* -------
* 28-Mar-2002 : Version 1 (DG);
*
*/

package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.XYPlot; import org.jfree.data.time.Millisecond; 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 demonstration application showing a time series chart where you can dynamically add
* (random) data by clicking on a button.
*
*/

public class DynamicDataDemo extends ApplicationFrame implements ActionListener {

   /** The time series data. */
   private TimeSeries series;
   /** The most recent value added. */
   private double lastValue = 100.0;
   /**
    * Constructs a new demonstration application.
    *
    * @param title  the frame title.
    */
   public DynamicDataDemo(final String title) {
       super(title);
       this.series = new TimeSeries("Random Data", Millisecond.class);
       final TimeSeriesCollection dataset = new TimeSeriesCollection(this.series);
       final JFreeChart chart = createChart(dataset);
       final ChartPanel chartPanel = new ChartPanel(chart);
       final JButton button = new JButton("Add New Data Item");
       button.setActionCommand("ADD_DATA");
       button.addActionListener(this);
       final JPanel content = new JPanel(new BorderLayout());
       content.add(chartPanel);
       content.add(button, BorderLayout.SOUTH);
       chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
       setContentPane(content);
   }
   /**
    * Creates a sample chart.
    * 
    * @param dataset  the dataset.
    * 
    * @return A sample chart.
    */
   private JFreeChart createChart(final XYDataset dataset) {
       final JFreeChart result = ChartFactory.createTimeSeriesChart(
           "Dynamic Data Demo", 
           "Time", 
           "Value",
           dataset, 
           true, 
           true, 
           false
       );
       final XYPlot plot = result.getXYPlot();
       ValueAxis axis = plot.getDomainAxis();
       axis.setAutoRange(true);
       axis.setFixedAutoRange(60000.0);  // 60 seconds
       axis = plot.getRangeAxis();
       axis.setRange(0.0, 200.0); 
       return result;
   }
   
   // ****************************************************************************
   // * JFREECHART DEVELOPER GUIDE                                               *
   // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
   // * to purchase from Object Refinery Limited:                                *
   // *                                                                          *
   // * http://www.object-refinery.ru/jfreechart/guide.html                     *
   // *                                                                          *
   // * Sales are used to provide funding for the JFreeChart project - please    * 
   // * support us so that we can continue developing free software.             *
   // ****************************************************************************
   
   /**
    * Handles a click on the button by adding new (random) data.
    *
    * @param e  the action event.
    */
   public void actionPerformed(final ActionEvent e) {
       if (e.getActionCommand().equals("ADD_DATA")) {
           final double factor = 0.90 + 0.2 * Math.random();
           this.lastValue = this.lastValue * factor;
           final Millisecond now = new Millisecond();
           System.out.println("Now = " + now.toString());
           this.series.add(new Millisecond(), this.lastValue);
       }
   }
   /**
    * Starting point for the demonstration application.
    *
    * @param args  ignored.
    */
   public static void main(final String[] args) {
       final DynamicDataDemo demo = new DynamicDataDemo("Dynamic Data Demo");
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}

      </source>
   
  
 
  

JFreeChart: Dynamic Data Demo 3

   <source lang="java">

/* ===========================================================

* 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.]
*
* ---------------------
* DynamicDataDemo3.java
* ---------------------
* (C) Copyright 2004, by Object Refinery Limited.
*
* Original Author:  David Gilbert (for Object Refinery Limited).
* Contributor(s):   -;
*
* $Id: DynamicDataDemo3.java,v 1.5 2004/04/26 19:11:54 taqua Exp $
*
* Changes
* -------
* 02-Mar-2004 : Version 1 (DG);
*
*/

package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.Color; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JPanel; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.rubinedDomainXYPlot; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.data.time.Millisecond; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.ui.Spacer; /**

* A demonstration application showing a time series chart where you can dynamically add
* (random) data by clicking on a button.
*
*/

public class DynamicDataDemo3 extends ApplicationFrame implements ActionListener {

   /** The number of subplots. */
   public static final int SUBPLOT_COUNT = 3;
   
   /** The datasets. */
   private TimeSeriesCollection[] datasets;
   
   /** The most recent value added to series 1. */
   private double[] lastValue = new double[SUBPLOT_COUNT];
   /**
    * Constructs a new demonstration application.
    *
    * @param title  the frame title.
    */
   public DynamicDataDemo3(final String title) {
       super(title);
       
       final CombinedDomainXYPlot plot = new CombinedDomainXYPlot(new DateAxis("Time"));
       this.datasets = new TimeSeriesCollection[SUBPLOT_COUNT];
       
       for (int i = 0; i < SUBPLOT_COUNT; i++) {
           this.lastValue[i] = 100.0;
           final TimeSeries series = new TimeSeries("Random " + i, Millisecond.class);
           this.datasets[i] = new TimeSeriesCollection(series);
           final NumberAxis rangeAxis = new NumberAxis("Y" + i);
           rangeAxis.setAutoRangeIncludesZero(false);
           final XYPlot subplot = new XYPlot(
                   this.datasets[i], null, rangeAxis, new StandardXYItemRenderer()
           );
           subplot.setBackgroundPaint(Color.lightGray);
           subplot.setDomainGridlinePaint(Color.white);
           subplot.setRangeGridlinePaint(Color.white);
           plot.add(subplot);
       }
       final JFreeChart chart = new JFreeChart("Dynamic Data Demo 3", plot);

// chart.getLegend().setAnchor(Legend.EAST);

       chart.setBorderPaint(Color.black);
       chart.setBorderVisible(true);
       chart.setBackgroundPaint(Color.white);
       
       plot.setBackgroundPaint(Color.lightGray);
       plot.setDomainGridlinePaint(Color.white);
       plot.setRangeGridlinePaint(Color.white);
 //      plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 4, 4, 4, 4));
       final ValueAxis axis = plot.getDomainAxis();
       axis.setAutoRange(true);
       axis.setFixedAutoRange(60000.0);  // 60 seconds
       
       final JPanel content = new JPanel(new BorderLayout());
       final ChartPanel chartPanel = new ChartPanel(chart);
       content.add(chartPanel);
       final JPanel buttonPanel = new JPanel(new FlowLayout());
       
       for (int i = 0; i < SUBPLOT_COUNT; i++) {
           final JButton button = new JButton("Series " + i);
           button.setActionCommand("ADD_DATA_" + i);
           button.addActionListener(this);
           buttonPanel.add(button);
       }
       final JButton buttonAll = new JButton("ALL");
       buttonAll.setActionCommand("ADD_ALL");
       buttonAll.addActionListener(this);
       buttonPanel.add(buttonAll);
       
       content.add(buttonPanel, BorderLayout.SOUTH);
       chartPanel.setPreferredSize(new java.awt.Dimension(500, 470));
       chartPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
       setContentPane(content);
   }
   // ****************************************************************************
   // * JFREECHART DEVELOPER GUIDE                                               *
   // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
   // * to purchase from Object Refinery Limited:                                *
   // *                                                                          *
   // * http://www.object-refinery.ru/jfreechart/guide.html                     *
   // *                                                                          *
   // * Sales are used to provide funding for the JFreeChart project - please    * 
   // * support us so that we can continue developing free software.             *
   // ****************************************************************************
   
   /**
    * Handles a click on the button by adding new (random) data.
    *
    * @param e  the action event.
    */
   public void actionPerformed(final ActionEvent e) {

       for (int i = 0; i < SUBPLOT_COUNT; i++) {
           if (e.getActionCommand().endsWith(String.valueOf(i))) {
               final Millisecond now = new Millisecond();
               System.out.println("Now = " + now.toString());
               this.lastValue[i] = this.lastValue[i] * (0.90 + 0.2 * Math.random());
               this.datasets[i].getSeries(0).add(new Millisecond(), this.lastValue[i]);       
           }
       }
       if (e.getActionCommand().equals("ADD_ALL")) {
           final Millisecond now = new Millisecond();
           System.out.println("Now = " + now.toString());
           for (int i = 0; i < SUBPLOT_COUNT; i++) {
               this.lastValue[i] = this.lastValue[i] * (0.90 + 0.2 * Math.random());
               this.datasets[i].getSeries(0).add(new Millisecond(), this.lastValue[i]);       
           }
       }
   }
   /**
    * Starting point for the demonstration application.
    *
    * @param args  ignored.
    */
   public static void main(final String[] args) {
       final DynamicDataDemo3 demo = new DynamicDataDemo3("Dynamic Data Demo 3");
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}

      </source>