Define Server Functionality



func The server function for this application. See the details section for more information.


Defines the server-side logic of the Shiny application. This generally involves creating functions that map user inputs to various kinds of output.


Call shinyServer from your application's server.R file, passing in a "server function" that provides the server-side logic of your application.

The server function will be called when each client (web browser) first loads the Shiny application's page. It must take an input and an output parameter. Any return value will be ignored. It also takes an optional session parameter, which is used when greater control is needed.

See the tutorial for more on how to write a server function.


## Not run: ------------------------------------ # # A very simple Shiny app that takes a message from the user # # and outputs an uppercase version of it. # shinyServer(function(input, output, session) { # output$uppercase <- renderText({ # toupper(input$message) # }) # }) ## ---------------------------------------------