updateSliderInput

0th

Percentile

Change the value of a slider input on the client

Change the value of a slider input on the client

Usage
updateSliderInput(session, inputId, label = NULL, value = NULL, min = NULL, max = NULL, step = NULL)
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.
value
The value to set for the input object.
min
Minimum value.
max
Maximum value.
step
Step size.
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.

For radioButtons(), checkboxGroupInput() and selectInput(), the set of choices can be cleared by using choices=character(0). Similarly, for these inputs, the selected item can be cleared by using selected=character(0).

See Also

sliderInput

Aliases
  • updateSliderInput
Examples
## Only run this example in interactive R sessions
if (interactive()) {
  shinyApp(
    ui = fluidPage(
      sidebarLayout(
        sidebarPanel(
          p("The first slider controls the second"),
          sliderInput("control", "Controller:", min=0, max=20, value=10,
                       step=1),
          sliderInput("receive", "Receiver:", min=0, max=20, value=10,
                       step=1)
        ),
        mainPanel()
      )
    ),
    server = function(input, output, session) {
      observe({
        val <- input$control
        # Control the value, min, max, and step.
        # Step size is 2 when input value is even; 1 when value is odd.
        updateSliderInput(session, "receive", value = val,
          min = floor(val/2), max = val+4, step = (val+1)%%2 + 1)
      })
    }
  )
}
Documentation reproduced from package shiny, version 0.14.2, License: GPL-3 | file LICENSE

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