How to highlight a trace in plotly linechart

[philschka]

Hello,

I would like to highlight a trace on hover an external button. Is there any build-in solution for that?
Or should I use something like plot it again with an other color or do something in svg on my own?

[etienne]

Here’s one way to do it: https://codepen.io/etpinard/pen/RQQqzq?editors=0010

[sislvacl]

Is there a possibility to do the same thing with plotly python library?