Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.ui/src/org/eclipse/birt/chart/ui/util/ChartUIUtil.java
* Gets the array of position display names
	 * 
	 * @param positionScope
	 *            position scope
	 * @param isFlipped
	 *            current chart model's direction
	 * @return string array of position display names
	 */
	public static String[] getPositionDisplayNames( int positionScope,
			boolean isFlipped )
	{
		if ( ( positionScope & ChartUIConstants.ALLOW_ALL_POSITION ) == ChartUIConstants.ALLOW_ALL_POSITION )
		{
			return LiteralHelper.fullPositionSet.getDisplayNames( );
		}
		List<String> items = new ArrayList<String>( 5 );
		
		if ( ( positionScope & ChartUIConstants.ALLOW_VERTICAL_POSITION ) == ChartUIConstants.ALLOW_VERTICAL_POSITION )
		{
			if ( isFlipped )
			{
				addArrayToList( LiteralHelper.horizontalPositionSet.getDisplayNames( ),
						items );
			}
			else
			{
				addArrayToList( LiteralHelper.verticalPositionSet.getDisplayNames( ),
						items );
			}
		}