Whether such an effect can be achieved

[helloworkcupid]

Highlight coordinate points, and can click, display click data, until the next click does not disappear

[mzimmerm]

If I understand the brief description, this is not doable at this time.

[helloworkcupid]

so flutter_charts can make the effect as the up piture ?

[mzimmerm]

Not at this time.