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
ScaleContext sct;
		if ( ( iType & LOGARITHMIC ) == LOGARITHMIC )
		{
			if ( ( iType & PERCENT ) == PERCENT )
			{
				oMaximum = new Double( 100 );
				oMinimum = new Double( 1 );
				oStep = new Double( 10 );
				bMaximumFixed = true;
				bMinimumFixed = true;
				bStepFixed = true;
				return;
			}
			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