Introduction

Case Studies: Building Web Applications with Shiny in R

Dean Attali

Shiny Consultant

Course overview

Assumes basic Shiny knowledge
Review important Shiny concepts
Develop multiple apps for real-life scenarios
Repetitive practice of essential features to increase familiarity
Learn new features and best practices

Shiny app template

library(shiny)

ui <- fluidPage()

server <- function(input, output) {}

shinyApp(ui = ui, server = server)

Load the shiny package
Create a webpage with fluidPage() - UI of a Shiny app
Create server portion of the app - where application logic lives
Combine UI + server into a Shiny app and run it

Adding text to Shiny

Add text as argument to fluidPage()
```
ui <- fluidPage(
    "Hello there" 
)
```
Result: webpage with text "Hello there"
fluidPage() accepts arbitrary # of arguments

ui <- fluidPage(
    "Hello",
    "there"
)

Formatted text

h1()

h2()

strong()

em()

Primary Header

Secondary header

Bold

Italicized (emphasized)

Formatted text

ui <- fluidPage(
    h1("SHINY COURSE"),
    "by",
    strong("Dean Attali"),
)

SHINY COURSE

by Dean Attali

Sidebar layout

chapter1_1_introduction.027.png

Sidebar layout

chapter1_1_introduction.028.png

Sidebar layout

chapter1_1_introduction.029.png

Sidebar Layout

chapter1_1_introduction.030.png

ui <- fluidPage( 
    sidebarLayout(
        sidebarPanel(
            "This is the sidebar"
        ),
        mainPanel(
            "Main panel goes here"
        )
    )
)

Let's practice!

Case Studies: Building Web Applications with Shiny in R