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.] * * ------------------ * XYLogAxesDemo.java * ------------------ * (C) Copyright 2002-2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): Clemens; * * $Id: XYLogAxesDemo.java,v 1.14 2004/04/26 19:12:04 taqua Exp $ * * Changes * ------- * 31-Jul-2002 : Version 1 (DG); * 11-Oct-2002 : Fixed issues reported by Checkstyle (DG); * 31-Jan-2003 : Replaced DefaultXYDataset with XYSeriesCollection (DG); * */ package org.jfree.chart.demo; import java.awt.Color; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.LogarithmicAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A demo showing the use of log axes. * */ public class XYLogAxesDemo extends ApplicationFrame { /** * Creates a new demo. * * @param title the frame title. */ public XYLogAxesDemo(final String title) { super(title); //Object[][][] data = new Object[3][50][2]; final XYSeries s1 = new XYSeries("Series 1"); final XYSeries s2 = new XYSeries("Series 2"); final XYSeries s3 = new XYSeries("Series 3"); // for (int i = 1; i <= 50; i++) { // s1.add(i, 1000 * Math.pow(i, -2)); // s2.add(i, 1000 * Math.pow(i, -3)); // s3.add(i, 1000 * Math.pow(i, -4)); // } for (int i = 1; i <= 50; i++) { s1.add(i, 10 * Math.exp(i / 5.0)); s2.add(i, 20 * Math.exp(i / 5.0)); s3.add(i, 30 * Math.exp(i / 5.0)); } final XYSeriesCollection dataset = new XYSeriesCollection(); dataset.addSeries(s1); dataset.addSeries(s2); dataset.addSeries(s3); final JFreeChart chart = ChartFactory.createXYLineChart("Log Axis Demo", // chart title "Category", // domain axis label "Value", // range axis label dataset, // data PlotOrientation.VERTICAL, true, // include legend true, false); final XYPlot plot = chart.getXYPlot(); final NumberAxis domainAxis = new NumberAxis("x"); final NumberAxis rangeAxis = new LogarithmicAxis("Log(y)"); plot.setDomainAxis(domainAxis); plot.setRangeAxis(rangeAxis); chart.setBackgroundPaint(Color.white); plot.setOutlinePaint(Color.black); 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. * // **************************************************************************** /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final XYLogAxesDemo demo = new XYLogAxesDemo("XY Log Axes Demo"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }