Interactive web apps with R and Shiny

Lecture 27

Dr. Mine Çetinkaya-Rundel

Duke University
STA 199 - Fall 2023

2023-12-07

Announcements

• Don’t forget to fill out the instructor and TA evaluations!

Shiny

Shiny

Shiny is an R package that makes it easy to build interactive web apps straight from R. You can host standalone apps on a webpage or embed them in R Markdown documents or build dashboards. You can also extend your Shiny apps with CSS themes, htmlwidgets, and JavaScript actions.

Shiny App

Server

+

⇄

Client / Browser

+ +

Anatomy of an App

library(shiny)

shinyApp(
  ui = list(),
  
  server = function(input, output, session) {
  
  }
)

Sidebar layout

From Mastering Shiny

Multi-row layout

From Mastering Shiny

Shiny Widgets Gallery

https://shiny.posit.co/r/gallery/widgets/widget-gallery/

A brief widget tour

rundel.shinyapps.io/widgets/

Live demo

Let’s make a weather app!

Go to https://github.com/sta199-f23-1/shiny-demo to follow along.