Question

How do i check and catch errors in R?

Answer 1

With tryCatch you can handle errors as you want:

an.error.occured <- FALSE
tryCatch( { result <- log("not a number"); print(res) }
          , error = function(e) {an.error.occured <<- TRUE})
print(an.error.occured)

## [1] TRUE

If you use an error handler function

• the error is not shown anymore and
• the execution continues after the tryCatch statement.