spin() Improvements in knitr

Note

This is one of a few posts on new features from a recent four-day knitr backlog sprint; see that post for the full details of the sprint.

The concept of spin() is like the reverse of purl(). Instead of pulling code out of a document, it turns a plain script—code with special #’ comments for prose and #+ comments for chunk options—into a full report. It’s a nice way to write a quick reproducible document when you can’t be bothered to …