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
dColumnWidth = dMaxW + legendData.dHorizonalReservedSpace;
					if ( dExtraWidth + dColumnWidth > legendData.dAvailableWidth
							+ legendData.dSafeSpacing )
					{
						dMaxW = -legendData.dHorizonalReservedSpace;
						columnList.clear( );
						break;
					}
					else
					{
						legendData.legendItems.addAll( columnList );
						columnList.clear( );
						dExtraWidth += dColumnWidth;
						dExceedingSpace = dExtraWidth
								+ dW
								+ legendData.dHorizonalReservedSpace
								- legendData.dAvailableWidth
								- legendData.dSafeSpacing;
						newMetrics = checkEllipsisText( dExceedingSpace,
								dW,
								xs,
								itm,
								la,
								legendData.dEllipsisWidth,
								legendData.maxWrappingSize );
						if ( newMetrics != null )
						{
							dW = newMetrics[0];
							dFHeight = newMetrics[1];
							dDeltaHeight = legendData.insCa.getTop( )