How to catch error / exception in R?

Question

Possible duplicate:
Exception handling in R

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

Answer 1

As Joshua said: use tryCatch. Include an argument error, which should be a function that takes one parameter (an error, commonly 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 "trick". Take a look tryCatchand withCallingHandlers.

Answer 3

stop? , .