This is the work-in-progress repo for the book Mastering Shiny by Hadley Wickham. It is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Built with bookdown.

Table of contents

1. Shiny 101

2. Shiny in action

3. Mastering UI

   1. Tables
   2. Graphics
      • renderCachedPlot()
      • Interactive plots
      • renderImage()
   3. Multipage apps
   4. Dashboards
   5. Shiny gadgets
   6. Dynamic UI
   7. htmlwidgets
   8. Custom HTML

4. Mastering reactivity

   1. Reactive components
   2. Dependency tracking
   3. Scoping
      • Code organisation
      • Using scopes to manage object lifetimes
      • Sharing working between users
      • Making an app in a function
      • Connecting to databases
   4. Advanced techniques
      • reactiveValues()
      • isolate()
   5. Async programming with promises

5. Taming Shiny

   1. Troubleshooting and debugging
   2. Testing with shinytest
   3. Managing dependencies with packrat
   4. Performance and scalability
      • Load testing with shinyloadtest
   5. Deployment options

6. Appendix

   1. Bookmarkable state
   2. Server-side selectize and DT
   3. R Markdown integration
   4. Reproducibility

Images

There are three directories for images:

• diagrams/ contains omnigraffle diagrams. Source of truth is .graffle files. Can delete all subdirectories.

• screenshots/ contains programmatic screenshots. Source of truth is book code. Can delete all subdirectories.

• images/ contains images created some other way. Images are source of truth and should not be deleted.