Bug 177483 [Regression] The value in chart area and legend area are different for Meter chart [0001]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
la.getCaption( ).setValue( lgtext );
			itm.reuse( la, legendData.maxWrappingSize );
			BoundingBox bb = null;
			try
			{
				bb = Methods.computeBox( xs, IConstants.ABOVE, la, 0, 0 );
			}
			catch ( IllegalArgumentException uiex )
			{
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.RENDERING,
						uiex );
			}
			double dFWidth = bb.getWidth( );
			double dFHeight = bb.getHeight( );
			double dExceedingSpace = dExtraWidth
					+ dFWidth
					+ legendData.dHorizonalReservedSpace
					- legendData.dAvailableWidth
					- legendData.dSafeSpacing;
			double[] newMetrics = checkEllipsisText( dExceedingSpace,
					dFWidth,
					xs,
					itm,
					la,
					legendData.dEllipsisWidth,
					legendData.maxWrappingSize );
			if ( newMetrics != null )
			{
				dFWidth = newMetrics[0];