Bug 212370 [Regression] Negative value can not be shown both in chart builder and when preview [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AxisSubUnit.java
{
	
	private double dValueLast = 0;
	
	private double dValueLastNegative = 0;
	
	private double dPositiveTotal = 0;
	
	private double dNegativeTotal = 0;
	
	private double dTotal = 0;
	
	private double dLastMaxPosition = Double.NaN;
	
	
	private double dLastMinPosition = Double.NaN;
	
	
	private final boolean bStackTogether;
	/**
	 * Constructor
	 * 
	 * @param bStackTogether
	 *            indicates if stack together
	 */
	AxisSubUnit( boolean bStackTogether )
	{
		this.bStackTogether = bStackTogether;
	}
	public final void reset( )