Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderHelper.java
{
			cdtAxisValue = Methods.asDateTime( sc.getMinimum( ) );
			iUnit = Methods.asInteger( sc.getUnit( ) );
			iStep = Methods.asInteger( sc.getStep( ) );
			if ( fs == null )
			{
				sdf = DateFormatWrapperFactory.getPreferredDateFormat( iUnit,
						getRunTimeContext( ).getULocale( ) );
			}
			cdt = cdtAxisValue;
		}
	}
	IAxisTypeComputation createAxisTypeComputation( ComputationContext context )
			throws ChartException
	{
		if ( ( sc.getType( ) & IConstants.TEXT ) == IConstants.TEXT
				|| sc.isCategoryScale( ) )
		{
			return new TextAxisTypeComputation( context );
		}
		else if ( ( sc.getType( ) & IConstants.LINEAR ) == IConstants.LINEAR )
		{
			return new LinearAxisTypeComputation( );
		}
		else if ( ( sc.getType( ) & IConstants.LOGARITHMIC ) == IConstants.LOGARITHMIC )
		{
			return new LogAxisTypeComputation( );
		}
		else if ( ( sc.getType( ) & IConstants.DATE_TIME ) == IConstants.DATE_TIME )
		{