Thank you for writing.
You can get the location of data point in the chart by using locationOfPoint:inSeries
method of TKChartSeriesRender
. Consider the code below:
TKChartSeriesRender *render = [[TKChartSeriesRender alloc] init];
CGPoint point = [render locationOfPoint:dataPoint inSeries:series];
I am not sure if I understand correctly the second part of the question. Could you please explain if you need the tap point coordinates on the chart's plot area or you need the data point that is on that location?
I am looking forward to your reply.
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