I need an interactive coordinate plane where the user can plot a coordinate himself. Something similar to : https://www.ixl.com/math/grade-3/graph-points-on-a-coordinate-plane
Can any help with opensource library with the above functionality?
Have you tried the google scatter chart? At the end of the page they have a "Events" section, I think you can found what you need there.
Here you can read the documentation: https://developers.google.com/chart/interactive/docs/gallery/scatterchart
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