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.] * * --------------------- * ScatterPlotDemo2.java * --------------------- * (C) Copyright 2002-2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: ScatterPlotDemo2.java,v 1.11 2004/04/26 19:12:03 taqua Exp $ * * Changes * ------- * 14-Oct-2002 : Version 1 (DG); * */ package org.jfree.chart.demo; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYDotRenderer; import org.jfree.data.xy.XYDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A demo scatter plot. * */ public class ScatterPlotDemo2 extends ApplicationFrame { /** * A demonstration application showing a scatter plot. * * @param title the frame title. */ public ScatterPlotDemo2(final String title) { super(title); final XYDataset dataset = new SampleXYDataset2(); final JFreeChart chart = createChart(dataset); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); chartPanel.setVerticalAxisTrace(true); chartPanel.setHorizontalAxisTrace(true); // chartPanel.setVerticalZoom(true); // chartPanel.setHorizontalZoom(true); 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 chart. * * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final XYDataset dataset) { final JFreeChart chart = ChartFactory.createScatterPlot("Scatter Plot Demo", "X", "Y", dataset, PlotOrientation.HORIZONTAL, true, // legend false, // tooltips false // urls ); final XYPlot plot = chart.getXYPlot(); plot.setRenderer(new XYDotRenderer()); final NumberAxis domainAxis = (NumberAxis) plot.getDomainAxis(); domainAxis.setAutoRangeIncludesZero(false); return chart; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final ScatterPlotDemo2 demo = new ScatterPlotDemo2("Scatter Plot Demo 2"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }