WaterfallChartDemo


1   /* ======================================
2    * JFreeChart : a free Java chart library
3    * ======================================
4    *
5    * Project Info:  http://www.jfree.org/jfreechart/index.html
6    * Project Lead:  David Gilbert (david.gilbert@object-refinery.com);
7    *
8    * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
9    *
10   * This library is free software; you can redistribute it and/or modify it under the terms
11   * of the GNU Lesser General Public License as published by the Free Software Foundation;
12   * either version 2.1 of the License, or (at your option) any later version.
13   *
14   * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15   * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16   * See the GNU Lesser General Public License for more details.
17   *
18   * You should have received a copy of the GNU Lesser General Public License along with this
19   * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20   * Boston, MA 02111-1307, USA.
21   *
22   * -----------------------
23   * WaterfallChartDemo.java
24   * -----------------------
25   * (C) Copyright 2003 by Object Refinery Limited and Contributors.
26   *
27   * Original Author:  David Gilbert (for Object Refinery Limited);
28   * Contributor(s):   -;
29   *
30   * $Id: WaterfallChartDemo.java,v 1.7 2003/11/28 10:57:36 mungady Exp $
31   *
32   * Changes
33   * -------
34   * 21-Oct-2003 : Version 1 (DG);
35   * 06-Nov-2003 : Modified to use ChartFactory (DG);
36   *
37   */
38  
39  package org.jfree.chart.demo;
40  
41  import java.awt.Color  ;
42  import java.text.DecimalFormat  ;
43  
44  import org.jfree.chart.ChartFactory;
45  import org.jfree.chart.ChartPanel;
46  import org.jfree.chart.JFreeChart;
47  import org.jfree.chart.Spacer;
48  import org.jfree.chart.axis.NumberTickUnit;
49  import org.jfree.chart.axis.TickUnits;
50  import org.jfree.chart.axis.ValueAxis;
51  import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
52  import org.jfree.chart.plot.CategoryPlot;
53  import org.jfree.chart.plot.PlotOrientation;
54  import org.jfree.chart.renderer.BarRenderer;
55  import org.jfree.data.CategoryDataset;
56  import org.jfree.data.DefaultCategoryDataset;
57  import org.jfree.ui.ApplicationFrame;
58  import org.jfree.ui.RefineryUtilities;
59  
60  /**
61   * A sample waterfall chart.
62   */
63  public class WaterfallChartDemo extends ApplicationFrame {
64  
65      /**
66       * Creates a new WaterFall Chart demo.
67       * 
68       * @param title  the frame title.
69       */
70      public WaterfallChartDemo(String   title) {
71  
72          super(title);
73          
74          CategoryDataset dataset = createDataset();
75          JFreeChart chart = createChart(dataset);
76          ChartPanel chartPanel = new ChartPanel(chart);
77          chartPanel.setPreferredSize(new java.awt.Dimension  (500, 270));
78          chartPanel.setEnforceFileExtensions(false);
79          setContentPane(chartPanel);
80         
81      }
82  
83      /**
84       * Creates a sample dataset for the demo.
85       * 
86       * @return A sample dataset.
87       */
88      private CategoryDataset createDataset() {
89          DefaultCategoryDataset dataset = new DefaultCategoryDataset();
90          dataset.addValue(15.76, "Product 1", "Labour");
91          dataset.addValue(8.66, "Product 1", "Administration");
92          dataset.addValue(4.71, "Product 1", "Marketing");
93          dataset.addValue(3.51, "Product 1", "Distribution");
94          dataset.addValue(32.64, "Product 1", "Total Expense");
95          return dataset;
96      }
97      
98      // ****************************************************************************
99      // * COMMERCIAL SUPPORT / JFREECHART DEVELOPER GUIDE                          *
100     // * Please note that commercial support and documentation is available from: *
101     // *                                                                          *
102     // * http://www.object-refinery.com/jfreechart/support.html                   *
103     // *                                                                          *
104     // * This is not only a great service for developers, but is a VERY IMPORTANT *
105     // * source of funding for the JFreeChart project.  Please support us so that *
106     // * we can continue developing free software.                                *
107     // ****************************************************************************
108 
109     /**
110      * Returns the chart.
111      * 
112      * @param dataset  the dataset.
113      *
114      * @return The chart.
115      */
116     private JFreeChart createChart(CategoryDataset dataset) {
117         
118         JFreeChart chart = ChartFactory.createWaterfallChart(
119             "Product Cost Breakdown",
120             "Expense Category",
121             "Cost Per Unit",
122             dataset,
123             PlotOrientation.VERTICAL,
124             true,
125             true,
126             false
127         );
128         chart.setBackgroundPaint(Color.white);
129 
130         CategoryPlot plot = chart.getCategoryPlot();
131         plot.setBackgroundPaint(Color.lightGray);
132         plot.setRangeGridlinePaint(Color.white);
133         plot.setRangeGridlinesVisible(true);
134         plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
135         
136         ValueAxis rangeAxis = plot.getRangeAxis();
137         
138         // create a custom tick unit collection...
139         DecimalFormat   formatter = new DecimalFormat  ("##,###");
140         formatter.setNegativePrefix("(");
141         formatter.setNegativeSuffix(")");
142         TickUnits standardUnits = new TickUnits();
143         standardUnits.add(new NumberTickUnit(5, formatter));
144         standardUnits.add(new NumberTickUnit(10, formatter));
145         standardUnits.add(new NumberTickUnit(20, formatter));
146         standardUnits.add(new NumberTickUnit(50, formatter));
147         standardUnits.add(new NumberTickUnit(100, formatter));
148         standardUnits.add(new NumberTickUnit(200, formatter));
149         standardUnits.add(new NumberTickUnit(500, formatter));
150         standardUnits.add(new NumberTickUnit(1000, formatter));
151         standardUnits.add(new NumberTickUnit(2000, formatter));
152         standardUnits.add(new NumberTickUnit(5000, formatter));
153         rangeAxis.setStandardTickUnits(standardUnits);
154 
155         BarRenderer renderer = (BarRenderer) plot.getRenderer();
156         renderer.setDrawBarOutline(false);
157 
158         DecimalFormat   labelFormatter = new DecimalFormat  ("$##,###.00");
159         labelFormatter.setNegativePrefix("(");
160         labelFormatter.setNegativeSuffix(")");
161         renderer.setItemLabelGenerator(
162             new StandardCategoryItemLabelGenerator(labelFormatter, false)
163         );
164         renderer.setItemLabelsVisible(true);
165 
166         return chart;
167     }
168 
169     /**
170      * Starting point for the demo.
171      *
172      * @param args  ignored.
173      */
174     public static void main(String  [] args) {
175         WaterfallChartDemo demo = new WaterfallChartDemo("Waterfall Chart Demo");
176         demo.pack();
177         RefineryUtilities.centerFrameOnScreen(demo);
178         demo.setVisible(true);
179     }
180     
181 }
182
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags