Using the flot js graphing library, you can get the (x,y) position of the mouse. Given a curve represented by plot values, how can you get the interpolated Y value on the curve for the given mouse position?
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Using the flot js graphing library, you can get the (x,y) position of the mouse. Given a curve represented by plot values, how can you get the interpolated Y value on the curve for the given mouse position?
There’s a crosshair/tracking demo on their pages. It has an
updateLegendmethod which simply takes the nearest x values at the crosshair line and does some linear interpolation.