Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
final PlotWith2DAxes pw2da = (PlotWith2DAxes) getComputations( );
				pw2da.getStackedSeriesLookup( ).resetSubUnits( );
			}
			logger.log( ILogger.INFORMATION,
					Messages.getString( "info.elapsed.render.time", 
							new Object[]{
								new Long( lTimer )
							},
							getRunTimeContext( ).getULocale( ) ) );
			htRenderers.remove( TIMER );
		}
	}
	private final int compare( DataElement de1, DataElement de2 )
			throws ChartException
	{
		if ( de1 == null && de2 == null )
			return IConstants.EQUAL;
		if ( de1 == null || de2 == null )
			return IConstants.SOME_NULL;
		final Class c1 = de1.getClass( );
		final Class c2 = de2.getClass( );
		if ( c1.equals( c2 ) )
		{
			if ( de1 instanceof NumberDataElement )
			{
				return Double.compare( ( (NumberDataElement) de1 ).getValue( ),
						( (NumberDataElement) de2 ).getValue( ) );
			}
			else if ( de1 instanceof DateTimeDataElement )
			{