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
if ( dExceedingSpace > 0 )
		{
			String firstRowText = itm.getLine( 0 );
			int nchars = (int) Math.round( 3
					* ( dExceedingSpace + dEllipsisWidth )
					/ dEllipsisWidth );
			
			if ( firstRowText.length( ) >= nchars )
			{
				double dReducedSpace = 0;
				int idx = 0;
				BoundingBox bb = null;
				String newText;
				
				while ( dReducedSpace < dExceedingSpace )
				{
					if ( firstRowText.length( ) >= nchars + idx )
					{
						newText = firstRowText.substring( 0,
								firstRowText.length( ) - nchars - idx )
								+ ELLIPSIS_STRING;
					}
					else
					{
						break;
					}
					la.getCaption( ).setValue( newText );
					itm.reuse( la, maxWrappingSize );
					try