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R Markdown still runs the code in the chunk, and the results can be used by other chunks. echo = FALSE prevents code, but not the results from appearing in the finished file. This is a useful way to embed figures. message = FALSE prevents messages that are generated by code from appearing in the finished file.
You use results="hide" to hide the results/output (but here the code would still be displayed). You use include=FALSE to have the chunk evaluated, but neither the code nor its output displayed.
You can insert an R code chunk either using the RStudio toolbar (the Insert button) or the keyboard shortcut Ctrl + Alt + I ( Cmd + Option + I on macOS).
Keyboard shortcuts to cut/delete code chunks in R Markdown Now my workaround is to use `shift` to select lines or fold the chunk and delete it, which is a bit tedious. Jupyter Notebook supports many operations on cells like insert/run/cut/copy/move, with corresponding keyboard shortcuts.
Have you tried eval=FALSE in the knitr code chunk options? e.g.:
```{r eval=FALSE}
print("Don't run me")
```
{r, eval=F, echo=T} will include the R source code in the output file while it is not evaluated
Posting for anyone who may come across this like I have. I've found that for small examples (if you don't want to use chunks), you can also just use back ticks like you would with regular markdown inline, but just don't add the "r" at the beginning:
`plot(cars)`
Will print the code itself, but will not print the plot.
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