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
if ( baTickLabelVisible == null
				|| index < 0 || index > baTickLabelVisible.length - 1 )
		{
			return false;
		}
		return baTickLabelVisible[index];
	}
	/**
	 * @param index
	 * @return
	 */
	public final boolean isTickLabelStaggered( int index )
	{
		if ( baTickLabelStaggered == null
				|| index < 0 || index > baTickLabelStaggered.length - 1 )
		{
			return false;
		}
		return baTickLabelStaggered[index];
	}
	/**
	 * @return
	 */
	public final boolean isAxisLabelStaggered( )
	{
		return bAxisLabelStaggered;
	}
	/**
	 * 
	 * @return