001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2009, 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 2003-2009, by Object Refinery Limited and Contributors.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): ;
034 *
035 * Changes
036 * -------
037 * 09-Mar-2005 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.chart.demo;
042
043 import java.awt.Color;
044 import java.awt.Dimension;
045 import java.awt.GradientPaint;
046
047 import org.jfree.chart.ChartFactory;
048 import org.jfree.chart.ChartPanel;
049 import org.jfree.chart.JFreeChart;
050 import org.jfree.chart.axis.CategoryAxis;
051 import org.jfree.chart.axis.CategoryLabelPositions;
052 import org.jfree.chart.axis.NumberAxis;
053 import org.jfree.chart.plot.CategoryPlot;
054 import org.jfree.chart.plot.PlotOrientation;
055 import org.jfree.chart.renderer.category.BarRenderer;
056 import org.jfree.data.category.CategoryDataset;
057 import org.jfree.data.category.DefaultCategoryDataset;
058 import org.jfree.ui.ApplicationFrame;
059 import org.jfree.ui.RefineryUtilities;
060
061 /**
062 * A simple demonstration application showing how to create a bar chart.
063 */
064 public class BarChartDemo1 extends ApplicationFrame {
065
066 /**
067 * Creates a new demo instance.
068 *
069 * @param title the frame title.
070 */
071 public BarChartDemo1(String title) {
072 super(title);
073 CategoryDataset dataset = createDataset();
074 JFreeChart chart = createChart(dataset);
075 ChartPanel chartPanel = new ChartPanel(chart);
076 chartPanel.setFillZoomRectangle(true);
077 chartPanel.setMouseWheelEnabled(true);
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
155 // ******************************************************************
156 // More than 150 demo applications are included with the JFreeChart
157 // Developer Guide...for more information, see:
158 //
159 // > http://www.object-refinery.com/jfreechart/guide.html
160 //
161 // ******************************************************************
162
163 // set the range axis to display integers only...
164 NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
165 rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
166
167 // disable bar outlines...
168 BarRenderer renderer = (BarRenderer) plot.getRenderer();
169 renderer.setDrawBarOutline(false);
170
171 // set up gradient paints for series...
172 GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue,
173 0.0f, 0.0f, new Color(0, 0, 64));
174 GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green,
175 0.0f, 0.0f, new Color(0, 64, 0));
176 GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red,
177 0.0f, 0.0f, new Color(64, 0, 0));
178 renderer.setSeriesPaint(0, gp0);
179 renderer.setSeriesPaint(1, gp1);
180 renderer.setSeriesPaint(2, gp2);
181
182 CategoryAxis domainAxis = plot.getDomainAxis();
183 domainAxis.setCategoryLabelPositions(
184 CategoryLabelPositions.createUpRotationLabelPositions(
185 Math.PI / 6.0));
186 // OPTIONAL CUSTOMISATION COMPLETED.
187
188 return chart;
189
190 }
191
192 /**
193 * Starting point for the demonstration application.
194 *
195 * @param args ignored.
196 */
197 public static void main(String[] args) {
198 BarChartDemo1 demo = new BarChartDemo1("Bar Chart Demo 1");
199 demo.pack();
200 RefineryUtilities.centerFrameOnScreen(demo);
201 demo.setVisible(true);
202 }
203
204 }