Java tutorial
/**************************************************** Statistics Online Computational Resource (SOCR) http://www.StatisticsResource.org All SOCR programs, materials, tools and resources are developed by and freely disseminated to the entire community. Users may revise, extend, redistribute, modify under the terms of the Lesser GNU General Public License as published by the Open Source Initiative http://opensource.org/licenses/. All efforts should be made to develop and distribute factually correct, useful, portable and extensible resource all available in all digital formats for free over the Internet. SOCR resources are distributed in the hope that they will be useful, but without any warranty; without any explicit, implicit or implied warranty for merchantability or fitness for a particular purpose. See the GNU Lesser General Public License for more details see http://opensource.org/licenses/lgpl-license.php. http://www.SOCR.ucla.edu http://wiki.stat.ucla.edu/socr It s Online, Therefore, It Exists! ****************************************************/ package edu.ucla.stat.SOCR.chart.demo; import java.awt.Color; import java.beans.PropertyChangeListener; import java.text.DecimalFormat; import java.text.SimpleDateFormat; 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.DateTickMarkPosition; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.ClusteredXYBarRenderer; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.time.Year; import org.jfree.data.xy.IntervalXYDataset; import edu.ucla.stat.SOCR.chart.ChartGenerator_JTable; import edu.ucla.stat.SOCR.chart.SuperIntervalXYChart_Time; import edu.ucla.stat.SOCR.chart.gui.SOCRXYSeriesLabelGenerator; /** * A simple demonstration application showing how to create a bar chart using * an {@link XYPlot}. */ public class XYBarChartDemo1 extends SuperIntervalXYChart_Time implements PropertyChangeListener { public void init() { //LEGEND_SWITCH =false; // JFreeChart bug, can't show the legend Panel the order of the legend is wrong super.init(); } public void doTest() { JFreeChart chart; ChartGenerator_JTable chartMaker = new ChartGenerator_JTable(); resetChart(); showMessageDialog(chartTitle + " doTest get called!"); int no_series = (dataTable.getColumnCount() - 2) / 2; int[][] pairs = new int[no_series][2]; for (int i = 0; i < no_series; i++) { pairs[i][0] = i * 2; //column 1 stores value pairs[i][1] = i * 2 + 1; //column 0 stores time } chart = chartMaker.getXYChart("Bar", chartTitle, "Category", "value", dataTable, no_series, pairs, "Year"); chartPanel = new ChartPanel(chart, false); setChart(); } protected JFreeChart createChart(IntervalXYDataset dataset) { JFreeChart chart = ChartFactory.createXYBarChart(chartTitle, domainLabel, true, rangeLabel, dataset, PlotOrientation.VERTICAL, !legendPanelOn, true, false); // then customise it a little... // chart.addSubtitle(new TextTitle("Source: http://www.amnestyusa.org/abolish/listbyyear.do")); chart.setBackgroundPaint(Color.white); XYPlot plot = chart.getXYPlot(); plot.setRenderer(new ClusteredXYBarRenderer()); XYItemRenderer renderer = plot.getRenderer(); StandardXYToolTipGenerator generator = new StandardXYToolTipGenerator("{1} = {2}", new SimpleDateFormat("yyyy"), new DecimalFormat("0")); renderer.setBaseToolTipGenerator(generator); renderer.setLegendItemLabelGenerator(new SOCRXYSeriesLabelGenerator()); plot.setBackgroundPaint(Color.lightGray); plot.setRangeGridlinePaint(Color.white); DateAxis axis = (DateAxis) plot.getDomainAxis(); axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE); axis.setLowerMargin(0.01); axis.setUpperMargin(0.01); // setXSummary(dataset); X is time return chart; } /** * Creates a sample dataset. */ protected IntervalXYDataset createDataset(boolean isDemo) { if (isDemo) { TimeSeries t1 = new TimeSeries("Executions", "Year", "Count", Year.class); try { t1.add(new Year(1976), new Integer(0)); t1.add(new Year(1977), new Integer(1)); t1.add(new Year(1978), new Integer(0)); t1.add(new Year(1979), new Integer(2)); t1.add(new Year(1980), new Integer(0)); t1.add(new Year(1981), new Integer(1)); t1.add(new Year(1982), new Integer(2)); t1.add(new Year(1983), new Integer(5)); t1.add(new Year(1984), new Integer(21)); t1.add(new Year(1985), new Integer(18)); t1.add(new Year(1986), new Integer(18)); t1.add(new Year(1987), new Integer(25)); t1.add(new Year(1988), new Integer(11)); t1.add(new Year(1989), new Integer(16)); t1.add(new Year(1990), new Integer(23)); t1.add(new Year(1991), new Integer(14)); t1.add(new Year(1992), new Integer(31)); t1.add(new Year(1993), new Integer(38)); t1.add(new Year(1994), new Integer(31)); t1.add(new Year(1995), new Integer(56)); t1.add(new Year(1996), new Integer(45)); t1.add(new Year(1997), new Integer(74)); t1.add(new Year(1998), new Integer(68)); t1.add(new Year(1999), new Integer(98)); t1.add(new Year(2000), new Integer(85)); t1.add(new Year(2001), new Integer(66)); t1.add(new Year(2002), new Integer(71)); t1.add(new Year(2003), new Integer(65)); } catch (Exception e) { System.err.println(e.getMessage()); } TimeSeriesCollection tsc = new TimeSeriesCollection(t1); // tsc.setDomainIsPointsInTime(false); return tsc; } else return super.createDataset(false); } }