Bug 212371 [Regression] Auto-scale does not work correctly and gridline is not shown anymore when run the attached java file [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
if ( dW > dMaxW )
						{
							dMaxW = dW;
						}
					}
					dAxisValue *= dAxisStep;
				}
			}
			else if ( ( getType( ) & DATE_TIME ) == DATE_TIME )
			{
				CDateTime cdtAxisValue = asDateTime( getMinimum( ) );
				int iStep = asInteger( getStep( ) );
				int iUnit = asInteger( getUnit( ) );
				IDateFormatWrapper sdf = null;
				if ( fs == null )
				{
					sdf = DateFormatWrapperFactory.getPreferredDateFormat( iUnit,
							rtc.getULocale( ) );
				}
				for ( int i = 0; i < da.size( ); i++ )
				{
					try
					{
						sText = ValueFormatter.format( cdtAxisValue,
								fs,
								rtc.getULocale( ),
								sdf );
					}
					catch ( ChartException dfex )
					{