Volatility module - server

Analyses the price history of the index selected in the Timeseries tab with volatility_analysis(), with the days of the volatility window and of the recent move chosen above the cards, and shows it in words and as a chart. The CSV file, named like s-p-500-volatility-2026-11-06.csv, holds volatility_csv(): a row per day, the days of the forecast included.

Usage

mod_volatility_server(id, history, dark_mode)

Arguments

id

Character. Module namespace id, must match the id used in mod_volatility_ui().

history

Reactive returning the price history of the selected index, from mod_timeseries_server().

dark_mode

Reactive returning "light" or "dark", the mode of the app.

Value

None. Called for its side effect of registering the module server.

Examples

if (FALSE) { # \dontrun{
# inside app_server():
function(input, output, session) {
  dark_mode <- reactive(input$dark_mode)
  history <- mod_timeseries_server("timeseries", indices, dark_mode)
  mod_volatility_server("volatility", history, dark_mode)
}
} # }