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    How to Use scaleLinear Invert to Find a Data Point to Highlight on Mouse Move

    Jason BrownJason Brown

    In this lesson we'll use scaleLinear to render a line, and additionally add data points using circle. Using onMouseMove we will call the invert function to do a reverse range to domain value interpolation. Then we will use Math.round and adjust the radius of the circle to highlight the selected point.

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