R: Suppressing output in RStudio console (code and warnings)

Question

I'm working on an R script that is quite long and will eventually have to be used by other people. I don't want RStudio to spit back every line of code to me when I'm running the script, because it is quite messy. Ideally, I want to write my own output to console that is more user-friendly, such as progress updates or custom warning/error messages.

Is there a way to do this? I tried using sink() to send my output somewhere else, but that only got rid of the output created by my code and not the output of code itself.

Thanks!

Answer 1

You can use suppressWarnings() to hide warnings.

> log(-1)
[1] NaN
Warning message:
In log(-1) : NaNs produced
> suppressWarnings(log(-1))
[1] NaN

try(call, silent = TRUE) for code that might throw errors.

> 1/"1"
Error in 1/"1" : non-numeric argument to binary operator
> try(1/"1", silent = TRUE)

There are also suppressPackageStartupMessages() and suppressMessages() .