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.] * ---------------------- * SymbolicChartDemo.java * ---------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * $Id: SymbolicChartDemo1.java,v 1.1 2011-01-31 09:01:50 klukas Exp $ * Changes * ------- * 14-Feb-2003 : Version 1 (DG); */ package org.jfree.chart.demo; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.SymbolicAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.SymbolicXYItemLabelGenerator; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.StandardXYItemRenderer; import org.jfree.chart.renderer.XYItemRenderer; import org.jfree.data.XYDataset; import org.jfree.data.YisSymbolic; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * An example of... */ public class SymbolicChartDemo1 extends ApplicationFrame { /** * A demonstration application. * * @param title * the frame title. */ public SymbolicChartDemo1(final String title) { super(title); // create a title... final XYDataset dataset = createDataset(); final ValueAxis domainAxis = new NumberAxis("X"); final SymbolicAxis symbolicAxis = new SymbolicAxis("Y", ((YisSymbolic) dataset).getYSymbolicValues()); final XYPlot plot = new XYPlot(dataset, domainAxis, symbolicAxis, null); final XYItemRenderer renderer = new StandardXYItemRenderer(StandardXYItemRenderer.SHAPES, new SymbolicXYItemLabelGenerator()); plot.setRenderer(renderer); final JFreeChart chart = new JFreeChart(title, plot); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } // **************************************************************************** // * 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. * // **************************************************************************** /** * Creates a dataset, consisting of two series of monthly data. * * @return the dataset. */ public XYDataset createDataset() { final String[] sData = { "Giraffe", "Gazelle", "Zebra", "Gnu" }; final SampleYSymbolicDataset data = new SampleYSymbolicDataset("BY Sample", 40, sData, 4, 20, new String[] { "B Fall", "B Spring", "B Summer", "B Winter" }); return data; } /** * Starting point for the demonstration application. * * @param args * ignored. */ public static void main(final String[] args) { final SymbolicChartDemo1 demo = new SymbolicChartDemo1("Symbolic Chart Demo 1"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }