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
+ dFHeight
									+ legendData.insCa.getBottom( );
						}
						dMaxW = dW;
						dRealHeight = Math.max( dRealHeight, dHeight );
						dHeight = dDeltaHeight;
					}
				}
				else
				{
					dMaxW = Math.max( dW, dMaxW );
					dHeight += dDeltaHeight;
				}
				columnList.add( new LegendItemHints( LEGEND_ENTRY,
						new Point( dExtraWidth, dHeight - dDeltaHeight ),
						dW,
						dFHeight,
						la.getCaption( ).getValue( ),
						dExtraHeight,
						extraText ) );
			}
			
			dColumnWidth = dMaxW + legendData.dHorizonalReservedSpace;
			if ( dExtraWidth + dColumnWidth > legendData.dAvailableWidth
					+ legendData.dSafeSpacing )
			{
				dMaxW = -legendData.dHorizonalReservedSpace;
			}
			else
			{