001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * ------------------
028 * BarChartDemo1.java
029 * ------------------
030 * (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): ;
034 *
035 * $Id: BarChartDemo1.java,v 1.1.2.4 2007/03/02 10:45:23 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 09-Mar-2005 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.chart.demo;
044
045 import java.awt.Color;
046 import java.awt.Dimension;
047 import java.awt.GradientPaint;
048
049 import org.jfree.chart.ChartFactory;
050 import org.jfree.chart.ChartPanel;
051 import org.jfree.chart.JFreeChart;
052 import org.jfree.chart.axis.CategoryAxis;
053 import org.jfree.chart.axis.CategoryLabelPositions;
054 import org.jfree.chart.axis.NumberAxis;
055 import org.jfree.chart.plot.CategoryPlot;
056 import org.jfree.chart.plot.PlotOrientation;
057 import org.jfree.chart.renderer.category.BarRenderer;
058 import org.jfree.data.category.CategoryDataset;
059 import org.jfree.data.category.DefaultCategoryDataset;
060 import org.jfree.ui.ApplicationFrame;
061 import org.jfree.ui.RefineryUtilities;
062
063 /**
064 * A simple demonstration application showing how to create a bar chart.
065 */
066 public class BarChartDemo1 extends ApplicationFrame {
067
068 /**
069 * Creates a new demo instance.
070 *
071 * @param title the frame title.
072 */
073 public BarChartDemo1(String title) {
074 super(title);
075 CategoryDataset dataset = createDataset();
076 JFreeChart chart = createChart(dataset);
077 ChartPanel chartPanel = new ChartPanel(chart, false);
078 chartPanel.setPreferredSize(new Dimension(500, 270));
079 setContentPane(chartPanel);
080 }
081
082 /**
083 * Returns a sample dataset.
084 *
085 * @return The dataset.
086 */
087 private static CategoryDataset createDataset() {
088
089 // row keys...
090 String series1 = "First";
091 String series2 = "Second";
092 String series3 = "Third";
093
094 // column keys...
095 String category1 = "Category 1";
096 String category2 = "Category 2";
097 String category3 = "Category 3";
098 String category4 = "Category 4";
099 String category5 = "Category 5";
100
101 // create the dataset...
102 DefaultCategoryDataset dataset = new DefaultCategoryDataset();
103
104 dataset.addValue(1.0, series1, category1);
105 dataset.addValue(4.0, series1, category2);
106 dataset.addValue(3.0, series1, category3);
107 dataset.addValue(5.0, series1, category4);
108 dataset.addValue(5.0, series1, category5);
109
110 dataset.addValue(5.0, series2, category1);
111 dataset.addValue(7.0, series2, category2);
112 dataset.addValue(6.0, series2, category3);
113 dataset.addValue(8.0, series2, category4);
114 dataset.addValue(4.0, series2, category5);
115
116 dataset.addValue(4.0, series3, category1);
117 dataset.addValue(3.0, series3, category2);
118 dataset.addValue(2.0, series3, category3);
119 dataset.addValue(3.0, series3, category4);
120 dataset.addValue(6.0, series3, category5);
121
122 return dataset;
123
124 }
125
126 /**
127 * Creates a sample chart.
128 *
129 * @param dataset the dataset.
130 *
131 * @return The chart.
132 */
133 private static JFreeChart createChart(CategoryDataset dataset) {
134
135 // create the chart...
136 JFreeChart chart = ChartFactory.createBarChart(
137 "Bar Chart Demo 1", // chart title
138 "Category", // domain axis label
139 "Value", // range axis label
140 dataset, // data
141 PlotOrientation.VERTICAL, // orientation
142 true, // include legend
143 true, // tooltips?
144 false // URLs?
145 );
146
147 // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
148
149 // set the background color for the chart...
150 chart.setBackgroundPaint(Color.white);
151
152 // get a reference to the plot for further customisation...
153 CategoryPlot plot = (CategoryPlot) chart.getPlot();
154 plot.setBackgroundPaint(Color.lightGray);
155 plot.setDomainGridlinePaint(Color.white);
156 plot.setDomainGridlinesVisible(true);
157 plot.setRangeGridlinePaint(Color.white);
158
159 // ******************************************************************
160 // More than 150 demo applications are included with the JFreeChart
161 // Developer Guide...for more information, see:
162 //
163 // > http://www.object-refinery.com/jfreechart/guide.html
164 //
165 // ******************************************************************
166
167 // set the range axis to display integers only...
168 final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
169 rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
170
171 // disable bar outlines...
172 BarRenderer renderer = (BarRenderer) plot.getRenderer();
173 renderer.setDrawBarOutline(false);
174
175 // set up gradient paints for series...
176 GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue,
177 0.0f, 0.0f, new Color(0, 0, 64));
178 GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green,
179 0.0f, 0.0f, new Color(0, 64, 0));
180 GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red,
181 0.0f, 0.0f, new Color(64, 0, 0));
182 renderer.setSeriesPaint(0, gp0);
183 renderer.setSeriesPaint(1, gp1);
184 renderer.setSeriesPaint(2, gp2);
185
186 CategoryAxis domainAxis = plot.getDomainAxis();
187 domainAxis.setCategoryLabelPositions(
188 CategoryLabelPositions.createUpRotationLabelPositions(
189 Math.PI / 6.0));
190 // OPTIONAL CUSTOMISATION COMPLETED.
191
192 return chart;
193
194 }
195
196 /**
197 * Starting point for the demonstration application.
198 *
199 * @param args ignored.
200 */
201 public static void main(String[] args) {
202 BarChartDemo1 demo = new BarChartDemo1("Bar Chart Demo 1");
203 demo.pack();
204 RefineryUtilities.centerFrameOnScreen(demo);
205 demo.setVisible(true);
206 }
207
208 }