I'm trying to update the format of the data marker using the following delegate
-(NSString*) chart :(SFChart *) chart formattedDataMarkerLabelForLabel:(NSString *) label dataPointAtIndex:(NSInteger) index;
but it has no parameter/reference to series index for the chart with more than one series making the data point index pointless as we have no idea which series it belongs to. For formatting we could convert the string label to a number but this seems very inefficient workaround for the chart.
Any ideas or suggestions are appreciated.