LineChartDemo1


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   * LineChartDemo1.java
24   * -------------------
25   * (C) Copyright 2002, 2003 by Object Refinery Limited and Contributors.
26   *
27   * Original Author:  David Gilbert (for Object Refinery Limited);
28   * Contributor(s):   -;
29   *
30   * $Id: LineChartDemo1.java,v 1.17 2003/11/28 10:57:36 mungady Exp $
31   *
32   * Changes
33   * -------
34   * 08-Apr-2002 : Version 1 (DG);
35   * 30-May-2002 : Modified to display values on the chart (DG);
36   * 25-Jun-2002 : Removed redundant import (DG);
37   * 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
38   *
39   */
40  
41  package org.jfree.chart.demo;
42  
43  import java.awt.BasicStroke  ;
44  import java.awt.Color  ;
45  
46  import org.jfree.chart.ChartFactory;
47  import org.jfree.chart.ChartPanel;
48  import org.jfree.chart.JFreeChart;
49  import org.jfree.chart.StandardLegend;
50  import org.jfree.chart.axis.NumberAxis;
51  import org.jfree.chart.plot.CategoryPlot;
52  import org.jfree.chart.plot.PlotOrientation;
53  import org.jfree.chart.renderer.ItemLabelPosition;
54  import org.jfree.chart.renderer.LineAndShapeRenderer;
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 simple demonstration application showing how to create a line chart using data from a
62   * {@link CategoryDataset}.
63   *
64   * @author David Gilbert
65   */
66  public class LineChartDemo1 extends ApplicationFrame {
67  
68      /**
69       * Creates a new demo.
70       *
71       * @param title  the frame title.
72       */
73      public LineChartDemo1(String   title) {
74  
75          super(title);
76  
77          CategoryDataset dataset = createDataset();
78          JFreeChart chart = createChart(dataset);
79          
80          // add the chart to a panel...
81          ChartPanel chartPanel = new ChartPanel(chart);
82          chartPanel.setPreferredSize(new java.awt.Dimension  (500, 270));
83          setContentPane(chartPanel);
84  
85      }
86  
87      /**
88       * Creates a sample dataset.
89       * 
90       * @return The dataset.
91       */
92      private CategoryDataset createDataset() {
93          
94          // row keys...
95          String   series1 = "First";
96          String   series2 = "Second";
97          String   series3 = "Third";
98  
99          // column keys...
100         String   type1 = "Type 1";
101         String   type2 = "Type 2";
102         String   type3 = "Type 3";
103         String   type4 = "Type 4";
104         String   type5 = "Type 5";
105         String   type6 = "Type 6";
106         String   type7 = "Type 7";
107         String   type8 = "Type 8";
108 
109         // create the dataset...
110         DefaultCategoryDataset dataset = new DefaultCategoryDataset();
111 
112         dataset.addValue(1.0, series1, type1);
113         dataset.addValue(4.0, series1, type2);
114         dataset.addValue(3.0, series1, type3);
115         dataset.addValue(5.0, series1, type4);
116         dataset.addValue(5.0, series1, type5);
117         dataset.addValue(7.0, series1, type6);
118         dataset.addValue(7.0, series1, type7);
119         dataset.addValue(8.0, series1, type8);
120 
121         dataset.addValue(5.0, series2, type1);
122         dataset.addValue(7.0, series2, type2);
123         dataset.addValue(6.0, series2, type3);
124         dataset.addValue(8.0, series2, type4);
125         dataset.addValue(4.0, series2, type5);
126         dataset.addValue(4.0, series2, type6);
127         dataset.addValue(2.0, series2, type7);
128         dataset.addValue(1.0, series2, type8);
129 
130         dataset.addValue(4.0, series3, type1);
131         dataset.addValue(3.0, series3, type2);
132         dataset.addValue(2.0, series3, type3);
133         dataset.addValue(3.0, series3, type4);
134         dataset.addValue(6.0, series3, type5);
135         dataset.addValue(3.0, series3, type6);
136         dataset.addValue(4.0, series3, type7);
137         dataset.addValue(3.0, series3, type8);
138 
139         return dataset;
140                 
141     }
142     
143     /**
144      * Creates a sample chart.
145      * 
146      * @param dataset  a dataset.
147      * 
148      * @return The chart.
149      */
150     private JFreeChart createChart(CategoryDataset dataset) {
151         
152         // create the chart...
153         JFreeChart chart = ChartFactory.createLineChart(
154             "Line Chart Demo 1",       // chart title
155             "Type",                    // domain axis label
156             "Value",                   // range axis label
157             dataset,                   // data
158             PlotOrientation.VERTICAL,  // orientation
159             true,                      // include legend
160             true,                      // tooltips
161             false                      // urls
162         );
163 
164         // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
165         StandardLegend legend = (StandardLegend) chart.getLegend();
166         legend.setDisplaySeriesShapes(true);
167         legend.setDisplaySeriesLines(true);
168 
169         chart.setBackgroundPaint(new Color  (0xCC, 0xCC, 0xFF));
170 
171         CategoryPlot plot = chart.getCategoryPlot();
172 
173         // customise the range axis...
174         NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
175         rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
176         rangeAxis.setAutoRangeIncludesZero(true);
177         rangeAxis.setUpperMargin(0.20);
178         rangeAxis.setLabelAngle(Math.PI / 2.0);
179 
180         // ****************************************************************************
181         // * COMMERCIAL SUPPORT / JFREECHART DEVELOPER GUIDE                          *
182         // * Please note that commercial support and documentation is available from: *
183         // *                                                                          *
184         // * http://www.object-refinery.com/jfreechart/support.html                   *
185         // *                                                                          *
186         // * This is not only a great service for developers, but is a VERY IMPORTANT *
187         // * source of funding for the JFreeChart project.  Please support us so that *
188         // * we can continue developing free software.                                *
189         // ****************************************************************************
190 
191         // customise the renderer...
192         LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
193         renderer.setDrawShapes(true);
194 
195         renderer.setSeriesStroke(
196             0, new BasicStroke  (2.0f,
197                                BasicStroke.CAP_ROUND,
198                                BasicStroke.JOIN_ROUND,
199                                1.0f,
200                                new float[] {10.0f, 6.0f},
201                                0.0f)
202         );
203         renderer.setSeriesStroke(
204             1, new BasicStroke  (2.0f,
205                                BasicStroke.CAP_ROUND,
206                                BasicStroke.JOIN_ROUND,
207                                1.0f,
208                                new float[] {6.0f, 6.0f},
209                                0.0f)
210         );
211         renderer.setSeriesStroke(
212             2, new BasicStroke  (2.0f,
213                                BasicStroke.CAP_ROUND,
214                                BasicStroke.JOIN_ROUND,
215                                1.0f,
216                                new float[] {2.0f, 6.0f},
217                                0.0f)
218         );
219 
220         renderer.setItemLabelsVisible(true);
221         renderer.setPositiveItemLabelPosition(new ItemLabelPosition());
222         renderer.setNegativeItemLabelPosition(new ItemLabelPosition());
223         // OPTIONAL CUSTOMISATION COMPLETED.
224         
225         return chart;
226     }
227     
228     /**
229      * Starting point for the demonstration application.
230      *
231      * @param args  ignored.
232      */
233     public static void main(String  [] args) {
234 
235         LineChartDemo1 demo = new LineChartDemo1("Line Chart Demo");
236         demo.pack();
237         RefineryUtilities.centerFrameOnScreen(demo);
238         demo.setVisible(true);
239 
240     }
241 
242 }
243
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