

Outputs change instantly as users modify inputs, without requiring a reload of the browser. Shiny applications are automatically “live” in the same way that spreadsheets are live.Build useful web applications with only a few lines of code-no JavaScript required.That means the input is dynamic and can change.Shiny is a new package from RStudio that makes it incredibly easy to build interactive web applications with R.įor an introduction and examples, visit the Shiny Dev Center. In order to interpret this information on the server side we need to tell the server that this is reactive input. The value of the selected input can be used on the server side by referring to with input$variable where variable is the inputId we defined on the ui side.

Looks good! Now we need to go back to the server side and make use of this input selection.

# shinyUI( # fluidPage( # sidebarLayout( # sidebarPanel( selectInput( inputId = "country", # essential! give the input a name that you will need on the server side label = "Select country", # text displayed in your app choices = unique(gapminder $country), # input to choose from, here all gapminder countries selected = "Netherlands") # define default # ), # mainPanel( # plotOutput("plot") # ) # ) # ) # )

8.2.1 Position = stack/dodge/fill/identity.You’ll learn the virtue of patience as R frustrates you:.You can not-always-easily-but-beautifully visualise stuff:.You can easily and beautifully visualise stuff:.You’ll learn about the wonderful world of coding:.You can also do fancy “state-of-the-art” analysis stuff, for example:.You can do ‘standard’ analysis, like linear regression:.
