Checkbox Group Input Control

Create a group of checkboxes that can be used to toggle multiple choices independently. The server will receive the input as a character vector of the selected values.

checkboxGroupInput(
  inputId,
  label,
  choices = NULL,
  selected = NULL,
  inline = FALSE,
  width = NULL,
  choiceNames = NULL,
  choiceValues = NULL
)

Arguments

inputId

The input slot that will be used to access the value.

label

Display label for the control, or NULL for no label.

choices

List of values to show checkboxes for. If elements of the list are named then that name rather than the value is displayed to the user. If this argument is provided, then choiceNames and choiceValues must not be provided, and vice-versa. The values should be strings; other types (such as logicals and numbers) will be coerced to strings.

selected

The values that should be initially selected, if any.

inline

If TRUE, render the choices inline (i.e. horizontally)

width

The width of the input, e.g. '400px', or '100%'; see validateCssUnit().

choiceNames, choiceValues

List of names and values, respectively, that are displayed to the user in the app and correspond to the each choice (for this reason, choiceNames and choiceValues must have the same length). If either of these arguments is provided, then the other must be provided and choices must not be provided. The advantage of using both of these over a named list for choices is that choiceNames allows any type of UI object to be passed through (tag objects, icons, HTML code, ...), instead of just simple text. See Examples.

Value

A list of HTML elements that can be added to a UI definition.

Server value

Character vector of values corresponding to the boxes that are checked.

See also

checkboxInput(), updateCheckboxGroupInput()

Other input elements: actionButton(), checkboxInput(), dateInput(), dateRangeInput(), fileInput(), numericInput(), passwordInput(), radioButtons(), selectInput(), sliderInput(), submitButton(), textAreaInput(), textInput(), varSelectInput()

Examples

## Only run examples in interactive R sessions
if (interactive()) {

ui <- fluidPage(
  checkboxGroupInput("variable", "Variables to show:",
                     c("Cylinders" = "cyl",
                       "Transmission" = "am",
                       "Gears" = "gear")),
  tableOutput("data")
)

server <- function(input, output, session) {
  output$data <- renderTable({
    mtcars[, c("mpg", input$variable), drop = FALSE]
  }, rownames = TRUE)
}

shinyApp(ui, server)

ui <- fluidPage(
  checkboxGroupInput("icons", "Choose icons:",
    choiceNames =
      list(icon("calendar"), icon("bed"),
           icon("cog"), icon("bug")),
    choiceValues =
      list("calendar", "bed", "cog", "bug")
  ),
  textOutput("txt")
)

server <- function(input, output, session) {
  output$txt <- renderText({
    icons <- paste(input$icons, collapse = ", ")
    paste("You chose", icons)
  })
}

shinyApp(ui, server)
}