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
041package org.jfree.chart.demo;
042
043import java.awt.Color;
044import java.awt.Dimension;
045import java.awt.GradientPaint;
046
047import org.jfree.chart.ChartFactory;
048import org.jfree.chart.ChartPanel;
049import org.jfree.chart.JFreeChart;
050import org.jfree.chart.axis.CategoryAxis;
051import org.jfree.chart.axis.CategoryLabelPositions;
052import org.jfree.chart.axis.NumberAxis;
053import org.jfree.chart.plot.CategoryPlot;
054import org.jfree.chart.plot.PlotOrientation;
055import org.jfree.chart.renderer.category.BarRenderer;
056import org.jfree.data.category.CategoryDataset;
057import org.jfree.data.category.DefaultCategoryDataset;
058import org.jfree.ui.ApplicationFrame;
059import org.jfree.ui.RefineryUtilities;
060
061/**
062 * A simple demonstration application showing how to create a bar chart.
063 */
064public 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}