Bug 214197 [Regression] Auto scale does not work correctly [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
oMinValue = null;
			oMaxValue = null;
		}
		else if ( ( iType & LINEAR ) == LINEAR )
		{
			Object oValue;
			double dValue, dMinValue = Double.MAX_VALUE, dMaxValue = -Double.MAX_VALUE;
			dsi.reset( );
			double dPrecision = 0;
			while ( dsi.hasNext( ) )
			{
				oValue = dsi.next( );
				if ( oValue == null ) 
				{
					continue;
				}
				dValue = ( (Double) oValue ).doubleValue( );
				if ( dValue < dMinValue )
					dMinValue = dValue;
				if ( dValue > dMaxValue )
					dMaxValue = dValue;
				dPrecision = getPrecision( dPrecision,
						dValue,
						fs,
						rtc.getULocale( ),
						bIsPercent);
			}
			if ( axisOrigin != null
					&& axisOrigin.getType( )