[jCharts-users] ClusteredBar Combo Chart

[Thiago H. B. <thi...@ce...>]

hello,

   is it possible to create a clustered bar with 2 bar instead of 3? 
beacuse I could´t make it out.
  When I put only two entries on my data variable it doenst work out.
Here is my class:

package org.jCharts.demo.simpleServlet;


import org.jCharts.axisChart.AxisChart;
import 
org.jCharts.axisChart.customRenderers.axisValue.renderers.ValueLabelPosition;
import 
org.jCharts.axisChart.customRenderers.axisValue.renderers.ValueLabelRenderer;
import org.jCharts.chartData.AxisChartDataSet;
import org.jCharts.chartData.DataSeries;
import org.jCharts.chartData.interfaces.IAxisDataSeries;
import org.jCharts.encoders.ServletEncoderHelper;
import org.jCharts.properties.*;
import org.jCharts.properties.util.ChartFont;
import org.jCharts.test.TestDataGenerator;
import org.jCharts.types.ChartType;

import javax.servlet.ServletException;
import javax.servlet.http.*;
import java.awt.*;
import java.io.IOException;


public class ComboChartServlet extends HttpServlet
{
    //---all of my charts serviced by this Servlet will have the same 
properties.
    private LineChartProperties lineChartProperties;

    //---all of my charts serviced by this Servlet will have the same 
properties.
    private BarChartProperties barChartProperties;

    //---all of my charts serviced by this Servlet will have the same 
properties.
    protected LegendProperties legendProperties;
    protected AxisProperties axisProperties;
    protected ChartProperties chartProperties;

    protected int width = 550;
    protected int height = 360;


    
/**********************************************************************************************
     *
    
 **********************************************************************************************/
    public void init()
    {
        this.legendProperties = new LegendProperties();
        this.chartProperties = new ChartProperties();
        this.axisProperties = new AxisProperties( false );
        ChartFont axisScaleFont = new ChartFont( new Font( "Georgia 
Negreta cursiva", Font.PLAIN, 13 ), Color.black );
        axisProperties.getXAxisProperties().setScaleChartFont( 
axisScaleFont );
        axisProperties.getYAxisProperties().setScaleChartFont( 
axisScaleFont );

        ChartFont axisTitleFont = new ChartFont( new Font( "Arial 
Narrow", Font.PLAIN, 14 ), Color.black );
        axisProperties.getXAxisProperties().setTitleChartFont( 
axisTitleFont );
        axisProperties.getYAxisProperties().setTitleChartFont( 
axisTitleFont );

        ChartFont titleFont = new ChartFont( new Font( "Georgia Negreta 
cursiva", Font.PLAIN, 14 ), Color.black );
        this.chartProperties.setTitleFont( titleFont );


        Stroke[] strokes = {LineChartProperties.DEFAULT_LINE_STROKE};
        Shape[] shapes = {PointChartProperties.SHAPE_DIAMOND};
        this.lineChartProperties = new LineChartProperties( strokes, 
shapes );

        this.barChartProperties = new BarChartProperties();
    }


    
/**********************************************************************************************
     *
    
 **********************************************************************************************/
    public void service( HttpServletRequest req, HttpServletResponse 
httpServletResponse ) throws ServletException, IOException
    {
        try
        {
            String[] xAxisLabels = {"2002", "2003", "2004"};
            String xAxisTitle = "Meses";
            String yAxisTitle = "Numero de CRs";
            String title = "Backlog de CRs";
            IAxisDataSeries dataSeries = new DataSeries( xAxisLabels, 
xAxisTitle, yAxisTitle, title );
           
            ValueLabelRenderer valueLabelRenderer = new 
ValueLabelRenderer( false, false, true ,-1 );
            valueLabelRenderer.setValueLabelPosition( 
ValueLabelPosition.ON_TOP );           
            valueLabelRenderer.useVerticalLabels( false );
            barChartProperties.addPostRenderEventListener( 
valueLabelRenderer );
           
            //double[][] data= new double[][]{{ 145, 80, 55 }};
            double[][] dataLinha = new double[][]{{50, 50, 50}};
            //String[] legendLabels = {"Bugs"};
            String[] legendLine = {"backlog de CRs"};
            //Paint[] paints = new Paint[]{Color.gray.darker()};
            Paint[] linePaints = new Paint[]{Color.green};
           
                 double[][] data= new double[][]{
                         {120,80,55},
                         {25,10,84},
                         {45,18,5}              
                 };
                 String[] legendLabels= { "Bugs", "Security Holes", 
"Backdoors" };
                 Paint[] paints= TestDataGenerator.getRandomPaints( 3 );
                 ClusteredBarChartProperties 
clusteredBarChartProperties= new ClusteredBarChartProperties();
                 AxisChartDataSet axisChartDataSet= new 
AxisChartDataSet( data, legendLabels, paints, ChartType.BAR_CLUSTERED, 
clusteredBarChartProperties );
                 dataSeries.addIAxisPlotDataSet( axisChartDataSet );
   
                 ChartProperties chartProperties= new ChartProperties();
           
            //dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( 
data, legendLabels, paints, ChartType.BAR, this.barChartProperties ) );
            dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( 
dataLinha, legendLine, linePaints, ChartType.LINE, 
this.lineChartProperties ) );
               
            AxisChart axisChart = new AxisChart( dataSeries, 
this.chartProperties, this.axisProperties, this.legendProperties, 
this.width, this.height );
            ServletEncoderHelper.encodeJPEG13( axisChart, 1.0f, 
httpServletResponse );
        }
        catch( Throwable throwable )
        {
            //HACK do your error handling here...
            throwable.printStackTrace();
        }
    }
}

-- 
Thiago Henrique Burgos
Engenheiro de Configuração
______________________________________________________________
C.entro de E.studos e S.istemas A.vancados do R.ecife
Fone: +55 81 3425-4857
http://www.cesar.org.br