radioButtons(inputId, label, choices, selected = NULL)

Creates a set of radio buttons, several buttons only one of which can be pressed at any time. The widget will return the value of the selected button to the server as a character string.

Arguments

inputId The name to use to look up the value of the widget (as a character string)

label A label to display above the buttons

choices A list of values. The widget will build a button for each value of the list. If the list has names, these will be displayed next to the buttons. Otherwise the values themselves will be displayed.

selected The value that should initially be selected, defaults to the first value.

Make this widget by copying the code in ui.R.