Source for org.jfree.chart.demo.BarChartDemo1

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2007, 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 2003-2007, 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 1.1.2.4 2007/03/02 10:45:23 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 09-Mar-2005 : Version 1 (DG);
  40:  *
  41:  */
  42: 
  43: package org.jfree.chart.demo;
  44: 
  45: import java.awt.Color;
  46: import java.awt.Dimension;
  47: import java.awt.GradientPaint;
  48: 
  49: import org.jfree.chart.ChartFactory;
  50: import org.jfree.chart.ChartPanel;
  51: import org.jfree.chart.JFreeChart;
  52: import org.jfree.chart.axis.CategoryAxis;
  53: import org.jfree.chart.axis.CategoryLabelPositions;
  54: import org.jfree.chart.axis.NumberAxis;
  55: import org.jfree.chart.plot.CategoryPlot;
  56: import org.jfree.chart.plot.PlotOrientation;
  57: import org.jfree.chart.renderer.category.BarRenderer;
  58: import org.jfree.data.category.CategoryDataset;
  59: import org.jfree.data.category.DefaultCategoryDataset;
  60: import org.jfree.ui.ApplicationFrame;
  61: import org.jfree.ui.RefineryUtilities;
  62: 
  63: /**
  64:  * A simple demonstration application showing how to create a bar chart.
  65:  */
  66: public class BarChartDemo1 extends ApplicationFrame {
  67: 
  68:     /**
  69:      * Creates a new demo instance.
  70:      *
  71:      * @param title  the frame title.
  72:      */
  73:     public BarChartDemo1(String title) {
  74:         super(title);
  75:         CategoryDataset dataset = createDataset();
  76:         JFreeChart chart = createChart(dataset);
  77:         ChartPanel chartPanel = new ChartPanel(chart, false);
  78:         chartPanel.setPreferredSize(new Dimension(500, 270));
  79:         setContentPane(chartPanel);
  80:     }
  81: 
  82:     /**
  83:      * Returns a sample dataset.
  84:      * 
  85:      * @return The dataset.
  86:      */
  87:     private static CategoryDataset createDataset() {
  88:         
  89:         // row keys...
  90:         String series1 = "First";
  91:         String series2 = "Second";
  92:         String series3 = "Third";
  93: 
  94:         // column keys...
  95:         String category1 = "Category 1";
  96:         String category2 = "Category 2";
  97:         String category3 = "Category 3";
  98:         String category4 = "Category 4";
  99:         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: }