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
try
			{
				return ValueFormatter.format( ca, fs, rtc.getULocale( ), sdf );
			}
			catch ( ChartException dfex )
			{
				logger.log( dfex );
				return IConstants.NULL_STRING;
			}
		}
		else if ( ( iType & IConstants.NUMERICAL ) == IConstants.NUMERICAL )
		{
			DecimalFormat df = null;
			
			if ( fs == null )
			{
				df = new DecimalFormat( getNumericPattern( ( (Number) oValue ).doubleValue( ) ) );
			}
			try
			{
				return ValueFormatter.format( oValue, fs, rtc.getULocale( ), df );
			}
			catch ( ChartException dfex )
			{
				logger.log( dfex );
				return IConstants.NULL_STRING;
			}
		}
		return IConstants.NULL_STRING;
	}