Themes

Shiny makes it easy to customize the theme of an app. The UI functions in Shiny make use of Twitter Bootstrap, a popular framework for building web applications. Bootswatch extends Bootstrap by making it really easy to skin an application with minimal code changes.

In this exercise, you will add a title panel to your app, use the theme selector to explore different themes, and apply then a theme of your choice.

This exercise is part of the course

Building Web Applications with Shiny in R

View Course

Exercise instructions

Run the app and use the theme selector on the top right to explore different Bootswatch themes.
Add an appropriate title to the page.
Replace the themeSelector() with a theme of your choice.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

ui <- fluidPage(
  # CODE BELOW: Add a titlePanel with an appropriate title
  
  # REPLACE CODE BELOW: with theme = shinythemes::shinytheme("")
  shinythemes::themeSelector(),
  sidebarLayout(
    sidebarPanel(
      selectInput('name', 'Select Name', top_trendy_names$name)
    ),
    mainPanel(
      tabsetPanel(
        tabPanel('Plot', plotly::plotlyOutput('plot_trendy_names')),
        tabPanel('Table', DT::DTOutput('table_trendy_names'))
      )
    )
  )
)

server <- function(input, output, session){
  # Function to plot trends in a name
  plot_trends <- function(){
     babynames %>% 
      filter(name == input$name) %>% 
      ggplot(aes(x = year, y = n)) +
      geom_col()
  }
  output$plot_trendy_names <- plotly::renderPlotly({
    plot_trends()
  })
  
  output$table_trendy_names <- DT::renderDT({
    babynames %>% 
      filter(name == input$name)
  })
}

shinyApp(ui = ui, server = server)

Edit and Run Code