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
*/
	public final Object getUnit( )
	{
		return oUnit;
	}
	/**
	 * 
	 * @return
	 */
	public final DataSetIterator getData( )
	{
		return dsiData;
	}
	final void setTickCordinates( AxisTickCoordinates atc )
	{
		if ( atc != null && atc.size( ) == 1 )
		{
			throw new RuntimeException( new ChartException( ChartEnginePlugin.ID,
					ChartException.COMPUTATION,
					"exception.tick.computations",  
					Messages.getResourceBundle( rtc.getULocale( ) ) ) );
		}
		this.atcTickCoordinates = atc;
	}
	/**
	 * @param index
	 * @return
	 */
	public final boolean isTickLabelVisible( int index )
	{