Problem in displaying waterfall chart with -ve values

[Diwakar Chittora]

Hi friends,
I am facing a problem with jfreechart waterfall model , the graph is coming properly for negative and positve values in ascending order, but for descending order some of the bars are not displayed . Please do let me know if this a bug with jfree chart library or i am doing something wrong.

Please find the code below:

    
package org.jfree.chart.demo; 
import java.awt.Color; 
import java.text.DecimalFormat; 
 
import org.jfree.chart.ChartPanel; 
import org.jfree.chart.JFreeChart; 
import org.jfree.chart.axis.CategoryAxis; 
import org.jfree.chart.axis.NumberAxis; 
import org.jfree.chart.axis.NumberTickUnit; 
import org.jfree.chart.axis.TickUnits; 
import org.jfree.chart.axis.ValueAxis; 
import org.jfree.chart.plot.CategoryPlot; 
import org.jfree.chart.renderer.category.WaterfallBarRenderer; 
import org.jfree.data.category.CategoryDataset; 
import org.jfree.data.category.DefaultCategoryDataset; 
import org.jfree.ui.ApplicationFrame; 
import org.jfree.ui.RefineryUtilities; 
import org.jfree.util.SortOrder; 
 
/** 
 * A sample waterfall chart. 
 */ 
public class WaterfallChartDemo2 extends ApplicationFrame { 
 
    /** 
     * Creates a new WaterFall Chart demo. 
     * 
     * @param title  the frame title. 
     */ 
    public WaterfallChartDemo2(final String title) { 
 
        super(title); 
        final CategoryDataset dataset = createDataset(); 
        final JFreeChart chart = createChart(dataset); 
        final ChartPanel chartPanel = new ChartPanel(chart); 
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); 
        chartPanel.setEnforceFileExtensions(false); 
        setContentPane(chartPanel); 
    } 
 
    /** 
     * Creates a sample dataset for the demo. 
     * 
     * @return A sample dataset. 
     */ 
    private CategoryDataset createDataset() { 
        final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); 
        dataset.addValue(1.3225, "S1", "1"); 
        dataset.addValue(4.3922, "S1", "2"); 
        dataset.addValue(2.6, "S1", "3"); 
        dataset.addValue(-5.6697, "S1", "4"); 
        dataset.addValue(0, "S1", " "); 
        dataset.addValue(0, "S1", "  "); 
        dataset.addValue(0, "S1", "   "); 
        dataset.addValue(0, "S1", "    "); 
        dataset.addValue(0, "S1", "     "); 
        return dataset; 
    } 
    
    /** 
     * Returns the chart. 
     * 
     * @param dataset  the dataset. 
     * 
     * @return The chart. 
     */ 
    private JFreeChart createChart(final CategoryDataset dataset) { 
        final CategoryAxis xAxis = new CategoryAxis("Category"); 
        final ValueAxis yAxis = new NumberAxis("$ in Thousands"); 
//        yAxis.setLowerMargin(0.10); 
//        yAxis.setUpperMargin(0.10); 
        // create a custom tick unit collection... 
        final DecimalFormat formatter = new DecimalFormat("##,###"); 
        formatter.setNegativePrefix("("); 
        formatter.setNegativeSuffix(")"); 
        final TickUnits standardUnits = new TickUnits(); 
        standardUnits.add(new NumberTickUnit(200, formatter)); 
        standardUnits.add(new NumberTickUnit(500, formatter)); 
        standardUnits.add(new NumberTickUnit(1000, formatter)); 
        standardUnits.add(new NumberTickUnit(2000, formatter)); 
        standardUnits.add(new NumberTickUnit(5000, formatter)); 
        yAxis.setStandardTickUnits(standardUnits); 
        final DecimalFormat labelFormatter = new DecimalFormat("##,###"); 
        labelFormatter.setNegativePrefix("("); 
        labelFormatter.setNegativeSuffix(")"); 
        final org.jfree.chart.renderer.category.WaterfallBarRenderer renderer = new WaterfallBarRenderer(); 
//        renderer.setLabelGenerator( 
  //          new StandardCategoryLabelGenerator("{2}", labelFormatter) 
    //    ); 
        renderer.setItemLabelsVisible(Boolean.TRUE); 
        renderer.setLastBarPaint(null); 
 
        final CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer); 
        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); 
        rangeAxis.setUpperMargin(0.25); 
//        plot.setBackgroundPaint(Color.lightGray); 
//        plot.setRangeGridlinePaint(Color.white); 
//        plot.setRangeGridlinesVisible(true); 
        plot.setColumnRenderingOrder(SortOrder.DESCENDING); 
////        final ValueMarker baseline = new ValueMarker(0.0); 
////        baseline.setPaint(Color.blue); 
////        baseline.setStroke(new BasicStroke(1.1f)); 
//        plot.addRangeMarker(baseline, Layer.FOREGROUND); 
 
        final JFreeChart chart = new JFreeChart("WaterFall Chart Demo DESCENDING", 
                                          JFreeChart.DEFAULT_TITLE_FONT, plot, false); 
        chart.setBackgroundPaint(Color.white); 
        return chart; 
    } 
 
    /** 
     * Starting point for the demo. 
     * 
     * @param args  ignored. 
     */ 
    public static void main(final String[] args) { 
        final WaterfallChartDemo2 demo = new WaterfallChartDemo2("Waterfall Chart Demo 2"); 
        demo.pack(); 
        RefineryUtilities.centerFrameOnScreen(demo); 
        demo.setVisible(true); 
    } 
} 
 

Thanks in Advance,
Regards,
Diwakar