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.] * * --------------------- * TimeSeriesDemo11.java * --------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: TimeSeriesDemo11.java,v 1.10 2004/04/30 07:42:50 mungady Exp $ * * Changes * ------- * 12-Aug-2003 : Version 1 (DG); * */ package org.jfree.chart.demo; import java.awt.Color; import java.awt.GridLayout; import javax.swing.JPanel; 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.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.data.time.Day; import org.jfree.data.time.RegularTimePeriod; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; import org.jfree.date.SerialDate; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.ui.Spacer; /** * An example of.... * */ public class TimeSeriesDemo11 extends ApplicationFrame { /** * A demonstration application showing how to... * * @param title the frame title. */ public TimeSeriesDemo11(final String title) { super(title); final JPanel panel = new JPanel(new GridLayout(2, 2)); panel.setPreferredSize(new java.awt.Dimension(800, 600)); final Day today = new Day(); final XYDataset dataset = createDataset("Series 1", 100.0, today, 365); final JFreeChart chart1 = createChart("Chart 1 : 1 Year", dataset); final ChartPanel chartPanel1 = new ChartPanel(chart1); panel.add(chartPanel1); final JFreeChart chart2 = createChart("Chart 2 : 6 Months", dataset); final SerialDate t = today.getSerialDate(); final SerialDate t6m = SerialDate.addMonths(-6, t); final Day sixMonthsAgo = new Day(t6m); final DateAxis axis2 = (DateAxis) chart2.getXYPlot().getDomainAxis(); axis2.setRange(sixMonthsAgo.getStart(), today.getEnd()); final ChartPanel chartPanel2 = new ChartPanel(chart2); panel.add(chartPanel2); final JFreeChart chart3 = createChart("Chart 3 : 3 Months", dataset); final SerialDate t3m = SerialDate.addMonths(-3, t); final Day threeMonthsAgo = new Day(t3m); final DateAxis axis3 = (DateAxis) chart3.getXYPlot().getDomainAxis(); axis3.setRange(threeMonthsAgo.getStart(), today.getEnd()); final ChartPanel chartPanel3 = new ChartPanel(chart3); panel.add(chartPanel3); final JFreeChart chart4 = createChart("Chart 4 : 1 Month", dataset); final SerialDate t1m = SerialDate.addMonths(-1, t); final Day oneMonthsAgo = new Day(t1m); final DateAxis axis4 = (DateAxis) chart4.getXYPlot().getDomainAxis(); axis4.setRange(oneMonthsAgo.getStart(), today.getEnd()); final ChartPanel chartPanel4 = new ChartPanel(chart4); panel.add(chartPanel4); setContentPane(panel); } // **************************************************************************** // * 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 the demo chart. * * @param title the title. * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final String title, final XYDataset dataset) { final JFreeChart chart = ChartFactory.createTimeSeriesChart(title, "Date", "Price", dataset, true, true, false); chart.setBackgroundPaint(Color.white); final XYPlot plot = chart.getXYPlot(); plot.setOrientation(PlotOrientation.VERTICAL); 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)); final StandardXYItemRenderer renderer = (StandardXYItemRenderer) plot.getRenderer(); renderer.setPaint(Color.blue); return chart; } /** * Creates a sample dataset. * * @param name the dataset name. * @param base the starting value. * @param start the starting period. * @param count the number of values to generate. * * @return The dataset. */ private XYDataset createDataset(final String name, final double base, final RegularTimePeriod start, final int count) { final TimeSeries series = new TimeSeries(name, start.getClass()); RegularTimePeriod period = start; double value = base; for (int i = 0; i < count; i++) { series.add(period, value); period = period.previous(); value = value * (1 + (Math.random() - 0.495) / 10.0); } final TimeSeriesCollection dataset = new TimeSeriesCollection(); dataset.addSeries(series); return dataset; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final TimeSeriesDemo11 demo = new TimeSeriesDemo11("Time Series Demo 11"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }