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.] * * ------------------ * ImageMapDemo3.java * ------------------ * (C) Copyright 2002-2004, by Richard Atkinson and Contributors. * * Original Author: Richard Atkinson (richard_c_atkinson@ntlworld.com); * Contributor(s): David Gilbert (for Object Refinery Limited); * * $Id: ImageMapDemo3.java,v 1.16 2004/04/26 19:11:55 taqua Exp $ * * Changes * ------- * 18-Jul-2002 : Version 1 (RA); * 10-Oct-2002 : Fixed errors reported by Checkstyle (DG); * */ package org.jfree.chart.demo; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.io.PrintWriter; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import org.jfree.chart.ChartRenderingInfo; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.entity.StandardEntityCollection; import org.jfree.chart.labels.CustomXYToolTipGenerator; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.chart.urls.StandardXYURLGenerator; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; /** * A demo showing the construction of HTML image maps for a time series chart. * * @author Richard Atkinson */ public class ImageMapDemo3 { /** * Default constructor. */ public ImageMapDemo3() { super(); } /** * Starting point for the demo. * * @param args ignored. * * @throws ParseException if there is a problem parsing dates. */ public static void main(final String[] args) throws ParseException { // Create a sample dataset final SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy"); final XYSeries dataSeries = new XYSeries("Curve data"); final ArrayList toolTips = new ArrayList(); dataSeries.add(sdf.parse("01-Jul-2002").getTime(), 5.22); toolTips.add("1D - 5.22"); dataSeries.add(sdf.parse("02-Jul-2002").getTime(), 5.18); toolTips.add("2D - 5.18"); dataSeries.add(sdf.parse("03-Jul-2002").getTime(), 5.23); toolTips.add("3D - 5.23"); dataSeries.add(sdf.parse("04-Jul-2002").getTime(), 5.15); toolTips.add("4D - 5.15"); dataSeries.add(sdf.parse("05-Jul-2002").getTime(), 5.22); toolTips.add("5D - 5.22"); dataSeries.add(sdf.parse("06-Jul-2002").getTime(), 5.25); toolTips.add("6D - 5.25"); dataSeries.add(sdf.parse("07-Jul-2002").getTime(), 5.31); toolTips.add("7D - 5.31"); dataSeries.add(sdf.parse("08-Jul-2002").getTime(), 5.36); toolTips.add("8D - 5.36"); final XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries); final CustomXYToolTipGenerator ttg = new CustomXYToolTipGenerator(); ttg.addToolTipSeries(toolTips); // Create the chart final StandardXYURLGenerator urlg = new StandardXYURLGenerator("xy_details.jsp"); final ValueAxis timeAxis = new DateAxis(""); final NumberAxis valueAxis = new NumberAxis(""); valueAxis.setAutoRangeIncludesZero(false); // override default final XYPlot plot = new XYPlot(xyDataset, timeAxis, valueAxis, null); final StandardXYItemRenderer sxyir = new StandardXYItemRenderer( StandardXYItemRenderer.LINES + StandardXYItemRenderer.SHAPES, ttg, urlg); sxyir.setShapesFilled(true); plot.setRenderer(sxyir); final JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, false); chart.setBackgroundPaint(java.awt.Color.white); // **************************************************************************** // * 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. * // **************************************************************************** // save it to an image try { final ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection()); final File file1 = new File("xychart100.png"); ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info); // write an HTML page incorporating the image with an image map final File file2 = new File("xychart100.html"); final OutputStream out = new BufferedOutputStream(new FileOutputStream(file2)); final PrintWriter writer = new PrintWriter(out); writer.println("<HTML>"); writer.println("<HEAD><TITLE>JFreeChart Image Map Demo</TITLE></HEAD>"); writer.println("<BODY>"); // ChartUtilities.writeImageMap(writer, "chart", info); writer.println("<IMG SRC=\"xychart100.png\" " + "WIDTH=\"600\" HEIGHT=\"400\" BORDER=\"0\" USEMAP=\"#chart\">"); writer.println("</BODY>"); writer.println("</HTML>"); writer.close(); } catch (IOException e) { System.out.println(e.toString()); } return; } }