FIXED: How do I add crosshairs to a Line chart? - Official support forum

Lorri · 2020-12-31T18:25:07+00:00

I have a Line chart that I'd like to add crosshairs when the user clicks or hovers over a point. Thanks.

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RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 15 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

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The easiest way is to just use the crosshairs* properties. With the Line chart it only works with the mousemove event.

I've made you an example and it's here:

https://codepen.io/rgraph/pen/LYRdbwJ

NOTE:

Initially I said that you had to use the Scatter chart for this - but that is only if you wish to get an X/Y coordinate pair (since the Scatter chart has an X axis scale). This example shows a Line chart with crosshairs.