Phantom yValue when two xAxis dates the same day

[oflanagan]

Hi,

I have a chart that contains two lines (both with different series). One series (which has tooltip turned on) has two dates on the same day (June 4 2023).

However, when the user hovers over this datapoint (June 4 2023), a phantom y value appears (1,899,005), that is not present in either series. Neither of the two yValues I would expect to see from my series appear (2,174,367, 1,623,643).

I have a JSFiddle here that demos the problem: https://jsfiddle.net/rt8yks6j/5/

I would appreciate some help in understanding why this is happening and any advice on how to rectify the problem.

Many thanks in advance.

[jakub.j]

Thanks for contacting us!

This happens because line charts can only show successive points. The value that you mentioned is an average of those two others.
For non-successive points, you can use a scatter series type and set the lineWidth option to show lines between the points.

Demo: https://jsfiddle.net/BlackLabel/t79kbowe/

Feel free to ask any further questions!
Regards
Jakub