Shiny and plotly event handle examples and tutorials

1. Example use case of plotly event_data & plotlyProxy

https://github.com/mw201608/Shiny/blob/master/plotly_event_data.R

2. How to test if a trace is hidden or shown

https://stackoverflow.com/questions/54822671/r-plotly-how-to-observe-whether-a-trace-is-hidden-or-shown-through-legend-click/54825337#54825337

3. Hide and show sidebar panel

https://stackoverflow.com/questions/47896963/hide-and-show-sidebar-panel-in-shiny

4. Proxy Interface in R

https://plotly.com/r/plotlyproxy/

5. Restyle the traces

https://community.plotly.com/t/how-can-i-determine-how-many-traces-exists-in-my-graph-and-what-are-those/6797

6. Sending messages from Shiny to JavaScript and back

https://shiny.rstudio.com/articles/js-send-message.html

https://shiny.rstudio.com/articles/communicating-with-js.html

7. Shiny performance

https://plotly-r.com/linking-views-with-shiny.html#shiny-performance

8. Intro JS

https://introjs.com/