Java/Chart/Layered Bar Chart

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JFreeChart: Layered Bar Chart

   <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.]
*
* -------------------------
* LayeredBarChartDemo1.java
* -------------------------
* (C) Copyright 2003, 2004, by Arnaud Lelievre and Contributors.
*
* Original Author:  Arnaud Lelievre (for Garden);
* Contributor(s):   David Gilbert (for Object Refinery Limited);
*
* $Id: LayeredBarChartDemo1.java,v 1.10 2004/04/26 19:11:55 taqua Exp $
* 
* Changes
* -------
* 28-Aug-2003 : Version 1 (AL);
* 11-Nov-2003 : Minor changes (DG);
*
*/

package org.jfree.chart.demo; import java.awt.Color; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.LayeredBarRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.general.DatasetUtilities; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**

* A simple demonstration application showing how to create a superimposed horizontal bar chart.
*
* @author Arnaud Lelievre
*/

public class LayeredBarChartDemo1 extends ApplicationFrame {

   /**
    * Creates a new demo instance.
    *
    * @param title  the frame title.
    */
   public LayeredBarChartDemo1(final String title) {
       super(title);
       final CategoryDataset dataset = createDataset();
       final JFreeChart chart = createChart(dataset);
       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.             *
   // ****************************************************************************
   
   /**
    * Returns a sample dataset.
    * 
    * @return a sample dataset.
    */
   private CategoryDataset createDataset() {
       // create a dataset...
       final double[][] data = new double[][] {
           {41.0, 33.0, 22.0, 64.0, 42.0, 62.0, 22.0, 14.0},
           {55.0, 63.0, 55.0, 48.0, 54.0, 37.0, 41.0, 39.0},
           {57.0, 75.0, 43.0, 33.0, 63.0, 46.0, 57.0, 33.0}
       };
       return DatasetUtilities.createCategoryDataset("Series ", "Factor ", data);
       
   }
   
   /**
    * Creates a chart for the specified dataset.
    * 
    * @param dataset  the dataset.
    * 
    * @return a chart.
    */
   private JFreeChart createChart(final CategoryDataset dataset) {
       final CategoryAxis categoryAxis = new CategoryAxis("Category");
       //categoryAxis.setMaxCategoryLabelWidthRatio(10.0f);
       final ValueAxis valueAxis = new NumberAxis("Score (%)");
       final CategoryPlot plot = new CategoryPlot(dataset,
                                            categoryAxis,
                                            valueAxis,
                                            new LayeredBarRenderer());
       
       plot.setOrientation(PlotOrientation.HORIZONTAL);
       final JFreeChart chart = new JFreeChart("Layered Bar Chart",
                                         JFreeChart.DEFAULT_TITLE_FONT, plot, true);
       // set the background color for the chart...
       chart.setBackgroundPaint(Color.lightGray);
       final LayeredBarRenderer renderer = (LayeredBarRenderer) plot.getRenderer();
       // we can set each series bar width individually or let the renderer manage a standard view.
       // the width is set in percentage, where 1.0 is the maximum (100%).
       renderer.setSeriesBarWidth(0, 1.0);
       renderer.setSeriesBarWidth(1, 0.7);
       renderer.setSeriesBarWidth(2, 0.4);
       renderer.setItemMargin(0.01);
       final CategoryAxis domainAxis = plot.getDomainAxis();
       domainAxis.setCategoryMargin(0.25);
       domainAxis.setUpperMargin(0.05);
       domainAxis.setLowerMargin(0.05);
       
       return chart;
       
   }
   
   /**
    * Starting point for the demonstration application.
    *
    * @param args  ignored.
    */
   public static void main(final String[] args) {
       final LayeredBarChartDemo1 demo = new LayeredBarChartDemo1("Layered Bar Chart Demo 1");
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}


      </source>
   
  
 
  



JFreeChart: Layered Bar Chart Demo 2 a superimposed vertical bar chart

   <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.]
*
* -------------------------
* LayeredBarChartDemo2.java
* -------------------------
* (C) Copyright 2003, 2004, by Arnaud Lelievre and Contributors.
*
* Original Author:  Arnaud Lelievre (for Garden);
* Contributor(s):   -;
*
*
* Changes
* -------
* 28-Aug-2003 : Version 1 (AL);
*
*/

package org.jfree.chart.demo; import java.awt.Color; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.LayeredBarRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.general.DatasetUtilities; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**

* A simple demonstration application showing how to create a superimposed vertical bar chart.
*
* @author Arnaud Lelievre
*/

public class LayeredBarChartDemo2 extends ApplicationFrame {

   /**
    * Creates a new demo instance.
    *
    * @param title  the frame title.
    */
   public LayeredBarChartDemo2(final String title) {
       super(title);
       // create a dataset...
       final double[][] data = new double[][] {
           {41.0, 33.0, 22.0, 64.0, 42.0, 62.0, 22.0, 14.0},
           {55.0, 63.0, 55.0, 48.0, 54.0, 37.0, 41.0, 39.0},
           {57.0, 75.0, 43.0, 33.0, 63.0, 46.0, 57.0, 33.0}
       };
       final CategoryDataset dataset = DatasetUtilities.createCategoryDataset("Series ",
                                                                        "Factor ", 
                                                                        data);
       // create the chart...
       final CategoryAxis categoryAxis = new CategoryAxis("Category");
       final ValueAxis valueAxis = new NumberAxis("Score (%)");
       final CategoryPlot plot = new CategoryPlot(dataset,
                                            categoryAxis, 
                                            valueAxis, 
                                            new LayeredBarRenderer());
       
       plot.setOrientation(PlotOrientation.VERTICAL);
       final JFreeChart chart = new JFreeChart(
           "Layered Bar Chart Demo 2", 
           JFreeChart.DEFAULT_TITLE_FONT, 
           plot, 
           true
       );
       
       // set the background color for the chart...
       chart.setBackgroundPaint(Color.lightGray);
       final LayeredBarRenderer renderer = (LayeredBarRenderer) plot.getRenderer();
       // we can set each series bar width individually or let the renderer manage a standard view.
       // the width is set in percentage, where 1.0 is the maximum (100%).
       renderer.setSeriesBarWidth(0, 1.0);
       renderer.setSeriesBarWidth(1, 0.7);
       renderer.setSeriesBarWidth(2, 0.5);
       renderer.setItemMargin(0.01);
       final CategoryAxis domainAxis = plot.getDomainAxis();
       domainAxis.setCategoryMargin(0.25);
       domainAxis.setUpperMargin(0.05);
       domainAxis.setLowerMargin(0.05);
       // 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 LayeredBarChartDemo2 demo = new LayeredBarChartDemo2("Layered Bar Chart Demo 2");
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}


      </source>