This vignette explains how you can host a problem set directly in the web using shinyapps.io.

1. Make sure you have installed all packages directly from github

The standard installation of RTutor and dependencies uses my own R repositorium.

However, if you want to host problem sets on shinyapps.io, all packages have to be installed from CRAN or directly from Github.

Hence, if you have not done so, follow the corresponding installation instructions on

https://github.com/skranz/RTutor#user-content-installing-rtutor-directly-from-github

to reinstall your packages correspondingly.

2. Create the app skeleton with rtutor.app.skel

The RTutor package has a function rtutor.app.skel that creates a skeleton of your app directory and a file deployapp.r which contains commands to deploy your app.

Here is an example fore creating an app based on an .rps file:

You must just adapt the names and directories in the example above.

Additional Options of rtutor.app.skel

It is possible to use the parameter ps.show.opts within rtutor.app.skel to change the behavior of the generated problem set. ps.show.opts = list(show.solution.btn=FALSE) for example transfers sets the option show.solution.btn to FALSE just as when using ps.show locally.

Providing the parameter shinyapps.account.info as a list holding the shinyapps.io Account info, i.e. shinyapps.account.info=list(name = "<SHINYAPPS_USERNAME>", token = "<TOKEN>", secret = "<SECRET>") the created deployapps.R file already holds the desired info - otherwise it has to be changed in deployapps.R to upload.

3. Open deployapp.r and follow the described steps

Now in your app directory, e.g. “D:/libraries/RTutor/examples/ExampleApp” a file deployapp.r is created. Follow the steps described in this file to deploy your app on shinyapps.io. The file also contains the links that describe how to create a user account on shinyapps.io.