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
sct = new ScaleContext( iMarginPercent,
					iType,
					oMinValue,
					oMaxValue,
					oStep );
		}
		else if ( ( iType & DATE_TIME ) == DATE_TIME )
		{
			int iUnit = asInteger( oUnit );
			sct = new ScaleContext( iMarginPercent,
					iType,
					iUnit,
					oMinValue,
					oMaxValue,
					oStep );
		}
		else
		{
			
			sct = new ScaleContext( iMarginPercent,
					iType,
					oMinValue,
					oMaxValue,
					oStep );
		}
		sct.setFixedValue( bMinimumFixed, bMaximumFixed, oMinimum, oMaximum );
		sct.setFixedStep( bStepFixed, oStepNumber );
		sct.computeMinMax( );
		updateContext( sct );
		if ( rtc.getScale( ) != null )