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
/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public void unsetTitlePosition( )
	{
		Position oldTitlePosition = titlePosition;
		boolean oldTitlePositionESet = titlePositionESet;
		titlePosition = TITLE_POSITION_EDEFAULT;
		titlePositionESet = false;
		if ( eNotificationRequired( ) )
			eNotify( new ENotificationImpl( this,
					Notification.UNSET,
					TypePackage.PIE_SERIES__TITLE_POSITION,
					oldTitlePosition,
					TITLE_POSITION_EDEFAULT,
					oldTitlePositionESet ) );
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public boolean isSetTitlePosition( )
	{
		return titlePositionESet;
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */