Bug 179913 Meter Chart color by categories with null values does not work correctly [0001]
Description: Meter Chart color by categories with null values does not work correctly. Build number: 2.2.0.v20070329-1055 Steps to reproduce: 1. New a Meter Chart with values as follows: Moto, null; Nokia, 58; null, 66; Benq, null. 2. In "Format Chart" tab, select "Series" node, choose "Color by Categories". 3. Preview. Expected result: 1. The needle which shows the second value should take the second color. 2. There should be four in the legend area and the third name is null. Actual result: 1. The needle which shows the second value should take the first color. 2. There should be three in the legend area. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
double dRealWidth = 0, dExtraHeight = 0;
		ArrayList columnList = new ArrayList( );
		SeriesDefinition sdBase = null;
		if ( cm instanceof ChartWithAxes )
		{
			
			final Axis axPrimaryBase = ( (ChartWithAxes) cm ).getBaseAxes( )[0];
			if ( axPrimaryBase.getSeriesDefinitions( ).isEmpty( ) )
			{
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.GENERATION,
						"exception.base.axis.no.series.definitions",  
						Messages.getResourceBundle( xs.getULocale( ) ) );
			}
			
			sdBase = (SeriesDefinition) axPrimaryBase.getSeriesDefinitions( )
					.get( 0 );
		}
		else if ( cm instanceof ChartWithoutAxes )
		{
			if ( ( (ChartWithoutAxes) cm ).getSeriesDefinitions( ).isEmpty( ) )
			{
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.GENERATION,
						"exception.base.axis.no.series.definitions", 
						Messages.getResourceBundle( xs.getULocale( ) ) );
			}
			
			sdBase = (SeriesDefinition) ( (ChartWithoutAxes) cm ).getSeriesDefinitions( )
					.get( 0 );