Java tutorial
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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.Axis; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTickMarkPosition; import org.jfree.chart.axis.NumberAxis; 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.chart.title.TextTitle; 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 org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import edu.ucla.stat.SOCR.chart.data.SimpleIntervalXYDataset; import edu.ucla.stat.SOCR.chart.ChartGenerator_JTable; import edu.ucla.stat.SOCR.chart.SuperHistogramChart; 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 HistogramChartDemo extends SuperHistogramChart implements PropertyChangeListener { public int windowSize = 1; /** * sample code for generating chart using ChartGenerator_JTable */ public void doTest() { JFreeChart chart; ChartGenerator_JTable chartMaker = new ChartGenerator_JTable(); resetChart(); showMessageDialog("histogramChartDemo doTest get called!"); int no_series = dataTable.getColumnCount(); //one y column only int[][] pairs = new int[no_series][2]; for (int i = 0; i < no_series; i++) { pairs[i][0] = 0; // there is no x column pairs[i][1] = 0; //column y } chart = chartMaker.getXYChart("Histogram", "Histogram Chart", "Value", "frequency", dataTable, no_series, pairs, String.valueOf(bin_size)); chartPanel = new ChartPanel(chart, false); setChart(); } protected JFreeChart createChart(IntervalXYDataset dataset) { JFreeChart chart = ChartFactory.createXYBarChart(chartTitle, domainLabel, false, rangeLabel, dataset, PlotOrientation.VERTICAL, // !legendPanelOn, false, // no legend 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(); NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); NumberAxis domainAxis = (NumberAxis) plot.getDomainAxis(); // domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); renderer.setLegendItemLabelGenerator(new SOCRXYSeriesLabelGenerator()); return chart; } /** * Creates a sample dataset. */ /** * Creates a sample dataset. * * @return a sample dataset. */ protected IntervalXYDataset createDataset(boolean isDemo) { if (isDemo) { /* row_count = 20; raw_x= new String[row_count]; raw_x[0]="97"; raw_x[1]="98";raw_x[2]="92";raw_x[3]="94";raw_x[4]="93"; raw_x[5]="106"; raw_x[6]="94";raw_x[7]="109";raw_x[8]="102";raw_x[9]="96"; raw_x[10]="103"; raw_x[11]="98";raw_x[12]="92";raw_x[13]="94";raw_x[14]="93"; raw_x[15]="106"; raw_x[16]="94";raw_x[17]="109";raw_x[18]="102";raw_x[19]="95";*/ row_count = 10; raw_x = new String[row_count]; raw_x[0] = "0.0077937"; raw_x[1] = "0.0205743"; raw_x[2] = "0.0313581"; raw_x[3] = "0.0136532"; raw_x[4] = "-0.011547"; raw_x[5] = "-0.0046848"; raw_x[6] = "0.0261796"; raw_x[7] = "0.0166328"; raw_x[8] = "0.02388"; raw_x[9] = "-0.0038399"; default_bin = (int) Math.sqrt(row_count); set_binSize(default_bin); do_histogram(raw_x, row_count); IntervalXYDataset dataset = new SimpleIntervalXYDataset(bin_count, x_start, x_end, y_freq); rangeLabel = "Frequency"; domainLabel = "Data"; return dataset; } else return super.createDataset(false); } }