0th

Percentile

##### Change the value of a radio input on the client

Change the value of a radio input on the client

##### Usage
updateRadioButtons(session, inputId, label = NULL, choices = NULL,
selected = NULL, inline = FALSE)
##### Arguments
session
The session object passed to function given to shinyServer.
inputId
The id of the input object.
label
The label to set for the input object.
choices
List of values to select from (if elements of the list are named then that name rather than the value is displayed to the user)
selected
The initially selected value (if not specified then defaults to the first value)
inline
If TRUE, render the choices inline (i.e. horizontally)
##### Details

The input updater functions send a message to the client, telling it to change the settings of an input object. The messages are collected and sent after all the observers (including outputs) have finished running.

The syntax of these functions is similar to the functions that created the inputs in the first place. For example, numericInput() and updateNumericInput() take a similar set of arguments.

Any arguments with NULL values will be ignored; they will not result in any changes to the input object on the client.

radioButtons

##### Examples
shinyServer(function(input, output, session) {

observe({
# We'll use the input$controller variable multiple times, so save it as x # for convenience. x <- input$controller

r_options <- list()
r_options[[sprintf("option label %d 1", x)]] <- sprintf("option-%d-1", x)
r_options[[sprintf("option label %d 2", x)]] <- sprintf("option-%d-2", x)

# Can also set the label and select an item
})