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.] * * ------------------------- * WaterTemperatureDemo.java * ------------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: WaterTemperatureDemo.java,v 1.12 2004/04/26 19:12:04 taqua Exp $ * * Changes * ------- * 17-Jan-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.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * This demo shows a plot of water temperature at various depths. * */ public class WaterTemperatureDemo extends ApplicationFrame { /** * A demonstration application showing an XY series containing a null value. * * @param title the frame title. */ public WaterTemperatureDemo(final String title) { super(title); final XYDataset dataset = createDataset(); final NumberAxis rangeAxis = new NumberAxis("Temperature"); rangeAxis.setRange(-0.55, -0.15); final NumberAxis domainAxis = new NumberAxis("Depth"); domainAxis.setInverted(true); domainAxis.setRange(0.0, 35.0); domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); final XYItemRenderer renderer = new StandardXYItemRenderer(); final XYPlot plot = new XYPlot(dataset, domainAxis, rangeAxis, renderer); plot.setOrientation(PlotOrientation.HORIZONTAL); final JFreeChart chart = new JFreeChart("Water Temperature By Depth", plot); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } /** * Creates a sample dataset. * * @return The dataset. */ private XYDataset createDataset() { final XYSeries series = new XYSeries("Zone 1"); series.add(1.0, -0.5); series.add(5.0, -0.5); series.add(10.0, -0.4); series.add(15.0, -0.4); series.add(20.0, -0.3); series.add(25.0, -0.3); series.add(30.0, -0.2); series.add(35.0, -0.2); return new XYSeriesCollection(series); } // **************************************************************************** // * 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 WaterTemperatureDemo demo = new WaterTemperatureDemo("Water Temperature Demo"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }