shiny (version 0.9.0)

runApp: Run Shiny Application

Description

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

Usage

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

Arguments

appDir

The directory of the application. Should contain server.R, plus, either ui.R or a www directory that contains the file index.html. Defaults to the working directory.

port

The TCP port that the application should listen on. Defaults to choosing 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"

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

# Start app in the current working directory
runApp()

# Start app in a subdirectory called myapp
runApp("myapp")


# 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)) })
  }
))