Java/Chart/Category Plot Chart

JFreeChart: Moving Average 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.]
*
* ---------------------------
* MinMaxCategoryPlotDemo.java
* ---------------------------
* (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: MinMaxCategoryPlotDemo.java,v 1.12 2004/04/30 08:10:43 mungady Exp $
*
* Changes
* -------
* 08-Aug-2002 : Demo for a renderer contributed by Tomer Peretz (DG);
* 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/

package org.jfree.chart.demo; import java.awt.Color; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.MinMaxCategoryRenderer; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**

* A simple demonstration application showing how to create a min/max category plot.
*
*/

public class MinMaxCategoryPlotDemo extends ApplicationFrame {

   /**
    * Creates a new demo.
    *
    * @param title  the frame title.
    */
   public MinMaxCategoryPlotDemo(final String title) {
       super(title);
       // create a dataset...
       final DefaultCategoryDataset dataset = new DefaultCategoryDataset();
       dataset.addValue(1.0, "First", "Category 1");
       dataset.addValue(4.0, "First", "Category 2");
       dataset.addValue(3.0, "First", "Category 3");
       dataset.addValue(5.0, "First", "Category 4");
       dataset.addValue(5.0, "First", "Category 5");
       dataset.addValue(7.0, "First", "Category 6");
       dataset.addValue(7.0, "First", "Category 7");
       dataset.addValue(8.0, "First", "Category 8");
       dataset.addValue(5.0, "Second", "Category 1");
       dataset.addValue(7.0, "Second", "Category 2");
       dataset.addValue(6.0, "Second", "Category 3");
       dataset.addValue(8.0, "Second", "Category 4");
       dataset.addValue(4.0, "Second", "Category 5");
       dataset.addValue(4.0, "Second", "Category 6");
       dataset.addValue(2.0, "Second", "Category 7");
       dataset.addValue(1.0, "Second", "Category 8");
       dataset.addValue(4.0, "Third", "Category 1");
       dataset.addValue(3.0, "Third", "Category 2");
       dataset.addValue(2.0, "Third", "Category 3");
       dataset.addValue(3.0, "Third", "Category 4");
       dataset.addValue(6.0, "Third", "Category 5");
       dataset.addValue(3.0, "Third", "Category 6");
       dataset.addValue(4.0, "Third", "Category 7");
       dataset.addValue(3.0, "Third", "Category 8");
       // create the chart...
       final JFreeChart chart = ChartFactory.createBarChart(
           "Min/Max Category Plot",  // chart title
           "Category",               // domain axis label
           "Value",                  // range axis label
           dataset,                  // data
           PlotOrientation.VERTICAL,
           true,                     // include legend
           true,                     // tooltips
           false                     // urls
       );
       // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
       // set the background color for the chart...
       chart.setBackgroundPaint(Color.yellow);
       // get a reference to the plot for further customisation...
       final CategoryPlot plot = chart.getCategoryPlot();
       plot.setRenderer(new MinMaxCategoryRenderer());
       // OPTIONAL CUSTOMISATION COMPLETED.
       // add the chart to a panel...
       final ChartPanel chartPanel = new ChartPanel(chart);
       chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
       setContentPane(chartPanel);
   }
   // ****************************************************************************
   // * 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.             *
   // ****************************************************************************
   
  /**
    * Starting point for the demonstration application.
    *
    * @param args  ignored.
    */
   public static void main(final String[] args) {
       final MinMaxCategoryPlotDemo demo = new MinMaxCategoryPlotDemo(
           "Min/Max Category Chart Demo"
       );
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}

      </source>