Shiny by RStudio

Run Shiny Application

runApp(appDir = getwd(), port = getOption("shiny.port"),
  launch.browser = getOption("shiny.launch.browser", interactive()),
  host = getOption("shiny.host", "127.0.0.1"), workerId = "",
  quiet = FALSE, display.mode = c("auto", "normal", "showcase"),
  test.mode = getOption("shiny.testmode", FALSE))

Arguments

appDir The application to run. Should be one of the following:
  • A directory containing server.R, plus, either ui.R or a www directory that contains the file index.html.
  • A directory containing app.R.
  • An .R file containing a Shiny application, ending with an expression that produces a Shiny app object.
  • A list with ui and server components.
  • A Shiny app object created by shinyApp.
port The TCP port that the application should listen on. If the port is not specified, and the shiny.port option is set (with options(shiny.port = XX)), then that port will be used. Otherwise, use a random port.
launch.browser If true, the system's default web browser will be launched automatically after the app is started. Defaults to true in interactive sessions only. This value of this parameter can also be a function to call with the application's URL.
host The IPv4 address that the application should listen on. Defaults to the shiny.host option, if set, or "127.0.0.1" if not. See Details.
workerId Can generally be ignored. Exists to help some editions of Shiny Server Pro route requests to the correct process.
quiet Should Shiny status messages be shown? Defaults to FALSE.
display.mode The mode in which to display the application. If set to the value "showcase", shows application code and metadata from a DESCRIPTION file in the application directory alongside the application. If set to "normal", displays the application normally. Defaults to "auto", which displays the application in the mode given in its DESCRIPTION file, if any.
test.mode Should the application be launched in test mode? This is only used for recording or running automated tests. Defaults to the shiny.testmode option, or FALSE if the option is not set.

Description

Runs a Shiny application. This function normally does not return; interrupt R to stop the application (usually by pressing Ctrl+C or Esc).

Details

The host parameter was introduced in Shiny 0.9.0. Its default value of "127.0.0.1" means that, contrary to previous versions of Shiny, only the current machine can access locally hosted Shiny apps. To allow other clients to connect, use the value "0.0.0.0" instead (which was the value that was hard-coded into Shiny in 0.8.0 and earlier).

Examples

## Not run: ------------------------------------ # # Start app in the current working directory # runApp() # # # Start app in a subdirectory called myapp # runApp("myapp") ## --------------------------------------------- ## Only run this example in interactive R sessions if (interactive()) { options(device.ask.default = FALSE) # Apps can be run without a server.r and ui.r file runApp(list( ui = bootstrapPage( numericInput('n', 'Number of obs', 100), plotOutput('plot') ), server = function(input, output) { output$plot <- renderPlot({ hist(runif(input$n)) }) } )) # Running a Shiny app object app <- shinyApp( ui = bootstrapPage( numericInput('n', 'Number of obs', 100), plotOutput('plot') ), server = function(input, output) { output$plot <- renderPlot({ hist(runif(input$n)) }) } ) runApp(app) }