Tutorial scripts with R/Shiny basics

This project accompanies BernR Meetup: Shiny from basics to awesome in 26 minutes, Monday, October 14, 2019.

The tutorial uses following packages:

• shiny for building interactive apps
• magrittr to provide a pipe operator
• shinycssloaders to provide loader animations (spinners)
• shinyBS to provide popups and alerts

The tutorial covers a basic shiny app with enhancements:

• app-step1.R implements a basic app to plot a histogram of Gaussian-distributed numbers with adjustable number of bins
• app-step2.R adds a selection field to choose the sample size from a predefined list
• app-step3.R adds a debounce function to slow down the reactive slider
• app-step4.R adds a loader animation (a spinner) from shinycssloaders package
• app-step5.R adds alert popups from shinyBS package
• app-step6.R adds help popups and tooltips from shinyBS package

Apps can be launched:

• from within RStudio by clicking Run App button in the upper right corner of the editor window
• from command line by executing R -e "shiny::runApp('app-step1.R', port = 6969)" and then pointing your browser to http://127.0.0.1:6969. The value of the port parameter can be changed to suit your needs.