How to catch an error/exception in R? [duplicate]

Question

Possible Duplicate:
Exception handling in R

Does anyone have idea on how to catch an error or an exception in R?

Answer 1

Like Joshua said: use tryCatch. Include an error argument, which should be a function accepting one parameter (the error, typically called e).

tryCatch(
  stop("you threw an error"), 
  error = function(e) 
  {
    print(e$message) # or whatever error handling code you want
  }
)

Answer 2

It really depends on what you mean by "catch". Look at tryCatch and withCallingHandlers.