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Loading Screens

standby offers several types of loading screens for Shiny apps. This document is a quickstart guide for using standby in your Shiny applications. Let us look at a simple example below:

library(shiny)
library(standby)

ui <- fluidPage(

  standby::useSpinkit(), # include dependencies
  fluidRow(
    standby::spinkit(plotOutput("plot1")), # wrap output inside loader
    actionButton("render", "Render")
  )

)

server <- function(input, output, session) {

    output$plot1 <- renderPlot({
      input$render
      Sys.sleep(3)
      plot(cars)
    })

}

shinyApp(ui, server)

To use spinners/loaders from standby in your Shiny application, include the following in the UI part of the app:

Include the dependencies using the appropriate use* functions (useSpinkit() in the above example).
Wrap the target output using corresponding rendering function (spinkit() in the above example).

The below table displays the dependency and rendering functions along with references:

Index	Dependency	Render	Reference
1	`useThreeDots()`	`threeDots()`	https://github.com/nzbin/three-dots
2	`useSpinkit()`	`spinkit()`	https://github.com/tobiasahlin/SpinKit
3	`useVizLoad()`	`vizLoad()`	https://github.com/RIDICS/Loading-Visualization
4	`useSpinners()`	`spinners()`	https://github.com/lukehaas/css-loaders
5	`useLoaders()`	`loaders()`	https://github.com/raphaelfabeni/css-loader

Visit the documentation to learn how to customize the alerts and notifications.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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