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.] * * --------------------- * TimeSeriesDemo13.java * --------------------- * (C) Copyright 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: TimeSeriesDemo13.java,v 1.4 2004/04/26 19:12:03 taqua Exp $ * * Changes * ------- * 11-Feb-2004 : Version 1 (DG); * */ package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.Color; import java.text.SimpleDateFormat; import javax.swing.JPanel; import javax.swing.JTabbedPane; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTickUnit; import org.jfree.chart.axis.TickUnits; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.data.time.RegularTimePeriod; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.time.Week; import org.jfree.data.xy.XYDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.ui.Spacer; /** * This demo shows two charts that use weekly data. A custom tick unit collection is defined to * control the domain axis formatting. * */ public class TimeSeriesDemo13 extends ApplicationFrame { /** * Creates a new demo instance. * * @param title the frame title. */ public TimeSeriesDemo13(final String title) { super(title); final XYDataset dataset1 = createDataset(26); final JFreeChart chart1 = createChart(dataset1); final ChartPanel chartPanel1 = new ChartPanel(chart1); final XYDataset dataset2 = createDataset(1); final JFreeChart chart2 = createChart(dataset2); final ChartPanel chartPanel2 = new ChartPanel(chart2); final JTabbedPane tabs = new JTabbedPane(); tabs.add("Chart 1", chartPanel1); tabs.add("Chart 2", chartPanel2); final JPanel content = new JPanel(new BorderLayout()); content.setPreferredSize(new java.awt.Dimension(500, 270)); content.add(tabs); setContentPane(content); } /** * Creates a chart. * * @param dataset a dataset. * * @return A chart. */ private JFreeChart createChart(final XYDataset dataset) { final JFreeChart chart = ChartFactory.createTimeSeriesChart("Weekly Data", "Date", "Value", dataset, true, true, false); chart.setBackgroundPaint(Color.white); // final StandardLegend sl = (StandardLegend) chart.getLegend(); // sl.setDisplaySeriesShapes(true); final XYPlot plot = chart.getXYPlot(); plot.setBackgroundPaint(Color.lightGray); plot.setDomainGridlinePaint(Color.white); plot.setRangeGridlinePaint(Color.white); // plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0)); plot.setDomainCrosshairVisible(true); plot.setRangeCrosshairVisible(true); final XYItemRenderer renderer = plot.getRenderer(); if (renderer instanceof StandardXYItemRenderer) { final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer; rr.setPlotShapes(true); rr.setShapesFilled(true); } final DateAxis axis = (DateAxis) plot.getDomainAxis(); final TickUnits standardUnits = new TickUnits(); standardUnits.add(new DateTickUnit(DateTickUnit.DAY, 1, new SimpleDateFormat("MMM dd ''yy"))); standardUnits.add(new DateTickUnit(DateTickUnit.DAY, 7, new SimpleDateFormat("MMM dd ''yy"))); standardUnits.add(new DateTickUnit(DateTickUnit.MONTH, 1, new SimpleDateFormat("MMM ''yy"))); axis.setStandardTickUnits(standardUnits); return chart; } // **************************************************************************** // * 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 containing random values at weekly intervals. * * @param items the number of items in the dataset. * * @return the dataset. */ private XYDataset createDataset(final int items) { final TimeSeries s1 = new TimeSeries("Random Data", Week.class); RegularTimePeriod t = new Week(); double v = 100.0; for (int i = 0; i < items; i++) { s1.add(t, v); v = v * (1 + ((Math.random() - 0.499) / 100.0)); t = t.next(); } final TimeSeriesCollection dataset = new TimeSeriesCollection(s1); dataset.setDomainIsPointsInTime(true); return dataset; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final TimeSeriesDemo13 demo = new TimeSeriesDemo13("Time Series Demo 13"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }