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#37469

@cancanvas,

In order to show the toolTip for the interpolated dataPoint, you will have to add the dataPoint to the dataSeries. However, you can hide the dataPoint by setting the markerSize property to 1 and highlightEnabled property to false.

Kindly take a look at this updated JSFiddle for an example on the same.

chart with a hidden data point calculated using linear interpolation formula


Adithya Menon
Team CanvasJS