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
* 
	 * @param axisType
	 *            axis type
	 * @param sOldRepresentation
	 *            old sample data representation
	 * @param index
	 *            sample data index
	 * @return new sample data representation
	 */
	public static String getConvertedSampleDataRepresentation(
			AxisType axisType, String sOldRepresentation, int index )
	{