Linking interactive widgets

Shiny has a number of widgets that can be linked in our applications. For referring to the widget gallery go to https://shiny.rstudio.com/gallery/widget-gallery.html . Here, you can find widgets with sample output and a see code button. Have a look at a snapshot of the site:

For better understanding, we will build an application with a Shiny dashboard and integrate widgets into our app. Let's develop our app step by step:

1. Develop a basic dashboard.
2. Copy the code into an R Script file.
3. If the shinydashboard package is not installed, install it.
4. Execute the code by clicking on the run app button:

    ## app.R ## 
    library(shiny) 
    library(shinydashboard) 
 
    ui <- dashboardPage( 
      dashboardHeader(), 
      dashboardSidebar(), 
      dashboardBody() 
    ) 
 
    server <- function(input, output) { } 
    shinyApp(ui, server...