new plot function : anomaly view

[7yl4r]

eg:

[bbest]

Hi @7yl4r,

@messiem created a beautiful Shiny app with interactive visualization of the climate anomaly using plotly:

• app: https://messiem.shinyapps.io/climate_indices/
• code: messiem/climate_indices_visu: climate_indices/app.R

You could similarly create a g = ggplot2::ggplot(...) and send to plotly::ggplotly(g) to render in rmarkdown.