Write markdown documents with R code that doesn't work, on purpose

Question

I'm experimenting with using Markdown to write homework problems for a course that involves some R coding. Because these are homework sets, I intentionally write code that throws errors;. Is it possible to use Markdown to display R code in the code style without evaluating it (or to trap the errors somehow)?

Accepted Answer

If you're using R markdown, putting `eval=FALSE` in the chunk options should work. Or use `try()`. Or, if you're using `knitr` as well, I believe that the default chunk option `error=FALSE` doesn't actually stop the compilation when it encounters an error, but just proceeds to the next chunk (which sometimes drives me crazy).

Write markdown documents with R code that doesn't work, on purpose

Solution

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