Source for org.jfree.chart.demo.BarChartDemo1

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.
   6:  *
   7:  * Project Info:  http://www.jfree.org/jfreechart/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  *
  27:  * ------------------
  28:  * BarChartDemo1.java
  29:  * ------------------
  30:  * (C) Copyright 2003-2006, by Object Refinery Limited and Contributors.
  31:  *
  32:  * Original Author:  David Gilbert (for Object Refinery Limited);
  33:  * Contributor(s):   ;
  34:  *
  35:  * $Id: BarChartDemo1.java,v 1.1.2.2 2006/07/26 10:00:40 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 09-Mar-2005 : Version 1, copied from the demo collection that ships with
  40:  *               the JFreeChart Developer Guide (DG);
  41:  *
  42:  */
  43: 
  44: package org.jfree.chart.demo;
  45: 
  46: import java.awt.Color;
  47: import java.awt.Dimension;
  48: import java.awt.GradientPaint;
  49: 
  50: import org.jfree.chart.ChartFactory;
  51: import org.jfree.chart.ChartPanel;
  52: import org.jfree.chart.JFreeChart;
  53: import org.jfree.chart.axis.CategoryAxis;
  54: import org.jfree.chart.axis.CategoryLabelPositions;
  55: import org.jfree.chart.axis.NumberAxis;
  56: import org.jfree.chart.plot.CategoryPlot;
  57: import org.jfree.chart.plot.PlotOrientation;
  58: import org.jfree.chart.renderer.category.BarRenderer;
  59: import org.jfree.data.category.CategoryDataset;
  60: import org.jfree.data.category.DefaultCategoryDataset;
  61: import org.jfree.ui.ApplicationFrame;
  62: import org.jfree.ui.RefineryUtilities;
  63: 
  64: /**
  65:  * A simple demonstration application showing how to create a bar chart.
  66:  */
  67: public class BarChartDemo1 extends ApplicationFrame {
  68: 
  69:     /**
  70:      * Creates a new demo instance.
  71:      *
  72:      * @param title  the frame title.
  73:      */
  74:     public BarChartDemo1(String title) {
  75:         super(title);
  76:         CategoryDataset dataset = createDataset();
  77:         JFreeChart chart = createChart(dataset);
  78:         ChartPanel chartPanel = new ChartPanel(chart, false);
  79:         chartPanel.setPreferredSize(new Dimension(500, 270));
  80:         setContentPane(chartPanel);
  81:     }
  82: 
  83:     /**
  84:      * Returns a sample dataset.
  85:      * 
  86:      * @return The dataset.
  87:      */
  88:     private static CategoryDataset createDataset() {
  89:         
  90:         // row keys...
  91:         String series1 = "First";
  92:         String series2 = "Second";
  93:         String series3 = "Third";
  94: 
  95:         // column keys...
  96:         String category1 = "Category 1";
  97:         String category2 = "Category 2";
  98:         String category3 = "Category 3";
  99:         String category4 = "Category 4";
 100:         String category5 = "Category 5";
 101: 
 102:         // create the dataset...
 103:         DefaultCategoryDataset dataset = new DefaultCategoryDataset();
 104: 
 105:         dataset.addValue(1.0, series1, category1);
 106:         dataset.addValue(4.0, series1, category2);
 107:         dataset.addValue(3.0, series1, category3);
 108:         dataset.addValue(5.0, series1, category4);
 109:         dataset.addValue(5.0, series1, category5);
 110: 
 111:         dataset.addValue(5.0, series2, category1);
 112:         dataset.addValue(7.0, series2, category2);
 113:         dataset.addValue(6.0, series2, category3);
 114:         dataset.addValue(8.0, series2, category4);
 115:         dataset.addValue(4.0, series2, category5);
 116: 
 117:         dataset.addValue(4.0, series3, category1);
 118:         dataset.addValue(3.0, series3, category2);
 119:         dataset.addValue(2.0, series3, category3);
 120:         dataset.addValue(3.0, series3, category4);
 121:         dataset.addValue(6.0, series3, category5);
 122:         
 123:         return dataset;
 124:         
 125:     }
 126:     
 127:     /**
 128:      * Creates a sample chart.
 129:      * 
 130:      * @param dataset  the dataset.
 131:      * 
 132:      * @return The chart.
 133:      */
 134:     private static JFreeChart createChart(CategoryDataset dataset) {
 135:         
 136:         // create the chart...
 137:         JFreeChart chart = ChartFactory.createBarChart(
 138:             "Bar Chart Demo 1",       // chart title
 139:             "Category",               // domain axis label
 140:             "Value",                  // range axis label
 141:             dataset,                  // data
 142:             PlotOrientation.VERTICAL, // orientation
 143:             true,                     // include legend
 144:             true,                     // tooltips?
 145:             false                     // URLs?
 146:         );
 147: 
 148:         // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
 149: 
 150:         // set the background color for the chart...
 151:         chart.setBackgroundPaint(Color.white);
 152: 
 153:         // get a reference to the plot for further customisation...
 154:         CategoryPlot plot = chart.getCategoryPlot();
 155:         plot.setBackgroundPaint(Color.lightGray);
 156:         plot.setDomainGridlinePaint(Color.white);
 157:         plot.setDomainGridlinesVisible(true);
 158:         plot.setRangeGridlinePaint(Color.white);
 159: 
 160:         // ******************************************************************
 161:         //  More than 100 demo applications are included with the JFreeChart
 162:         //  Developer Guide...for more information, see:
 163:         //
 164:         //  >   http://www.object-refinery.com/jfreechart/guide.html
 165:         //
 166:         // ******************************************************************
 167:         
 168:         // set the range axis to display integers only...
 169:         final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
 170:         rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
 171: 
 172:         // disable bar outlines...
 173:         BarRenderer renderer = (BarRenderer) plot.getRenderer();
 174:         renderer.setDrawBarOutline(false);
 175:         
 176:         // set up gradient paints for series...
 177:         GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 
 178:                 0.0f, 0.0f, new Color(0, 0, 64));
 179:         GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 
 180:                 0.0f, 0.0f, new Color(0, 64, 0));
 181:         GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 
 182:                 0.0f, 0.0f, new Color(64, 0, 0));
 183:         renderer.setSeriesPaint(0, gp0);
 184:         renderer.setSeriesPaint(1, gp1);
 185:         renderer.setSeriesPaint(2, gp2);
 186: 
 187:         CategoryAxis domainAxis = plot.getDomainAxis();
 188:         domainAxis.setCategoryLabelPositions(
 189:                 CategoryLabelPositions.createUpRotationLabelPositions(
 190:                         Math.PI / 6.0));
 191:         // OPTIONAL CUSTOMISATION COMPLETED.
 192:         
 193:         return chart;
 194:         
 195:     }
 196:     
 197:     /**
 198:      * Starting point for the demonstration application.
 199:      *
 200:      * @param args  ignored.
 201:      */
 202:     public static void main(String[] args) {
 203:         BarChartDemo1 demo = new BarChartDemo1("Bar Chart Demo 1");
 204:         demo.pack();
 205:         RefineryUtilities.centerFrameOnScreen(demo);
 206:         demo.setVisible(true);
 207:     }
 208: 
 209: }