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
}
					dValue = ( (Double) oValue ).doubleValue( );
					if ( dValue < dMinValue )
						dMinValue = dValue;
					if ( dValue > dMaxValue )
						dMaxValue = dValue;
				}
				return new Object[]{
						new Double( dMinValue ), new Double( dMaxValue )
				};
			}
			else if ( ( iType & DATE_TIME ) == DATE_TIME )
			{
				Calendar cValue;
				Calendar caMin = null, caMax = null;
				dsiData.reset( );
				while ( dsiData.hasNext( ) )
				{
					oValue = dsiData.next( );
					cValue = (Calendar) oValue;
					if ( caMin == null )
					{
						caMin = cValue;
					}
					if ( caMax == null )
					{
						caMax = cValue;
					}
					if ( cValue == null ) 
					{