1. R Shiny
EPID 799C Fall 2017

2. Today: Examples & Patterns
Intro to Shiny
Basics
Dashboards
Hands on
Default app
Births app
Apps I’m working on
R in other pathways (Javascript / D3)

3. But first! Web apps the usual way
HTML/XML
Javascript (D3, special APIs)
CSS
Prep work in multiple other languages / applications (ArcGIS, inkscape / photoshop, etc.)
^ Note: this is what “real” web folks ($$$ NYT) are currently doing, for the most part.
Let’s look at an example: my final (WIP) project due next week. :/

4. Why it’s hard Data and server setup can be annoying
Building histograms by hand is no fun
Requires multiple languages

5. Shiny Basics

6. Shiny Basics

7. Shiny Basics

8. Shiny Basics

9. Shiny Basics: Even More Widgets

10. Shiny Basics

11. Shiny Basics UI
Can also directly write HTML (as functions) if you want to for max flexibility.
Handles javascript and css too.
Layouts:
Base has layout tools, dashboard has some more.

12. Shiny Basics: Where to start?
Gallery  Start Simple for a great place to start. Also multiple tutorials (of course!) online.

13. Improving Shiny: Dashboards with flexdashboard and shinydashboard
Comparison of two options:
flexdashboard shinydashboard*
R Markdown Shiny UI code
Super easy Not quite as easy
Static or dynamic Dynamic
CSS flexbox layout Bootstrap grid layout
*What I use

14. RMarkdown flexdashboards

15. A CDC example

16. Shiny Gadgets Lives inside R Studio as an AddIn
Helps you do your analysis
Design your own buttons!
Written in shiny app/server syntax

17. Shinyapps.io Free or very cheap server space
Integrates seamlessly with Rstudio
Upload your completed apps with a click

18. Let’s Try! Default Shiny App Births shiny app Fancier apps (WIP)
D3/Javascript