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
{
			( (Combo) control ).setText( text );
		}
	}
	
	/**
	 * help method for verifying the data type compatibility of the series,
	 * returns true if the series has a numeric aggregation function
	 * 
	 * @param series
	 */
	public static boolean isNumericAggregate( Series series )
	{
		Chart cm = ChartUtil.getChartFromSeries( series );
		SeriesDefinition baseSD = ( ChartUIUtil.getBaseSeriesDefinitions( cm ).get( 0 ) );
		SeriesDefinition orthSD = null;
		orthSD = (SeriesDefinition) series.eContainer( );
		for ( Query query : series.getDataDefinition( ) )
		{
			String aggFunc = null;
			try
			{
				aggFunc = ChartUtil.getAggregateFuncExpr( orthSD, baseSD, query );
			}
			catch ( ChartException e )
			{
			}
			if ( baseSD != orthSD && ChartUtil.isMagicAggregate( aggFunc ) )
			{
				return true;