Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/type/impl/PieSeriesImpl.java
*/
	public void setRatio( double newRatio )
	{
		double oldRatio = ratio;
		ratio = newRatio;
		boolean oldRatioESet = ratioESet;
		ratioESet = true;
		if ( eNotificationRequired( ) )
			eNotify( new ENotificationImpl( this,
					Notification.SET,
					TypePackage.PIE_SERIES__RATIO,
					oldRatio,
					ratio,
					!oldRatioESet ) );
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void unsetRatio( )
	{
		double oldRatio = ratio;
		boolean oldRatioESet = ratioESet;
		ratio = RATIO_EDEFAULT;
		ratioESet = false;
		if ( eNotificationRequired( ) )
			eNotify( new ENotificationImpl( this,
					Notification.UNSET,
					TypePackage.PIE_SERIES__RATIO,