Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it under the terms * of the GNU Lesser General Public License as published by the Free Software Foundation; * either version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with this * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ---------------------- * BoxAndWhiskerDemo.java * ---------------------- * (C) Copyright 2003, 2004, by David Browning and Contributors. * * Original Author: David Browning (for the Australian Institute of Marine Science); * Contributor(s): David Gilbert (for Object Refinery Limited); * * $Id: BoxAndWhiskerDemo.java,v 1.12 2004/06/02 14:35:42 mungady Exp $ * * Changes * ------- * 21-Aug-2003 : Version 1, contributed by David Browning (for the Australian Institute of * Marine Science); * 27-Aug-2003 : Renamed BoxAndWhiskerCategoryDemo --> BoxAndWhiskerDemo, moved dataset creation * into the demo (DG); * */ package org.jfree.chart.demo; import java.awt.Font; import java.util.ArrayList; import java.util.List; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.labels.BoxAndWhiskerToolTipGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.category.BoxAndWhiskerRenderer; import org.jfree.data.statistics.BoxAndWhiskerCategoryDataset; import org.jfree.data.statistics.DefaultBoxAndWhiskerCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.util.Log; import org.jfree.util.LogContext; /** * Demonstration of a box-and-whisker chart using a {@link CategoryPlot}. * * @author David Browning */ public class BoxAndWhiskerDemo extends ApplicationFrame { /** Access to logging facilities. */ private static final LogContext LOGGER = Log.createContext(BoxAndWhiskerDemo.class); /** * Creates a new demo. * * @param title the frame title. */ public BoxAndWhiskerDemo(final String title) { super(title); final BoxAndWhiskerCategoryDataset dataset = createSampleDataset(); final CategoryAxis xAxis = new CategoryAxis("Type"); final NumberAxis yAxis = new NumberAxis("Value"); yAxis.setAutoRangeIncludesZero(false); final BoxAndWhiskerRenderer renderer = new BoxAndWhiskerRenderer(); renderer.setFillBox(false); renderer.setToolTipGenerator(new BoxAndWhiskerToolTipGenerator()); final CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer); final JFreeChart chart = new JFreeChart("Box-and-Whisker Demo", new Font("SansSerif", Font.BOLD, 14), plot, true); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(450, 270)); setContentPane(chartPanel); } /** * Creates a sample dataset. * * @return A sample dataset. */ private BoxAndWhiskerCategoryDataset createSampleDataset() { final int seriesCount = 3; final int categoryCount = 4; final int entityCount = 22; final DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset(); for (int i = 0; i < seriesCount; i++) { for (int j = 0; j < categoryCount; j++) { final List list = new ArrayList(); // add some values... for (int k = 0; k < entityCount; k++) { final double value1 = 10.0 + Math.random() * 3; list.add(new Double(value1)); final double value2 = 11.25 + Math.random(); // concentrate values in the middle list.add(new Double(value2)); } LOGGER.debug("Adding series " + i); LOGGER.debug(list.toString()); dataset.add(list, "Series " + i, " Type " + j); } } return dataset; } // **************************************************************************** // * JFREECHART DEVELOPER GUIDE * // * The JFreeChart Developer Guide, written by David Gilbert, is available * // * to purchase from Object Refinery Limited: * // * * // * http://www.object-refinery.com/jfreechart/guide.html * // * * // * Sales are used to provide funding for the JFreeChart project - please * // * support us so that we can continue developing free software. * // **************************************************************************** /** * For testing from the command line. * * @param args ignored. */ public static void main(final String[] args) { //Log.getInstance().addTarget(new PrintStreamLogTarget(System.out)); final BoxAndWhiskerDemo demo = new BoxAndWhiskerDemo("Box-and-Whisker Chart Demo"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }