Thanks for the reply.
How can this be the case when, if you click on the smoothed plot curve the tracker gives you an X,Y value that is not in the original data set (ie it is smooth interpolated between the points)
For example if I have 5 data points in the plot within a smoothed line series and I click anywhere on the series "between" the points I get a value at that point I clicked displayed by the tracker. I want to be able to get that calculated value from the
series in code without the user clicking the line series.
If I want the value of the plot 1/6 of the way between the points (2.5,24) and (3.4,35) I need to be able to get this info from the plot without the user having to click 1/6 of the way between the points.