How to catch an error/exception in R?

Question

Possible Duplicate:
Exception handling in R

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

http://stackoverflow.com/questions/2622777/exception-handling-in-r — VitoshKa, Oct 28 '10 at 21:06
For people like me who got here from Google, this was helpful: http://mazamascience.com/WorkingWithData/?p=912 — Taj Morton, Jan 28 '14 at 18:27
For those finding this page, this [link](https://stackoverflow.com/questions/12193779/how-to-write-trycatch-in-r) has a thorough explanation. — steveb, Jun 18 '17 at 04:34

Richie Cotton · Answer 1 · 2014-07-17T05:45:26.000

6

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
  }
)

edited Jul 17 '14 at 05:45

answered Oct 29 '10 at 13:44

Richie Cotton

score 2 · Answer 2 · answered Oct 28 '10 at 20:58

2

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

answered Oct 28 '10 at 20:58

Joshua Ulrich

score 1 · Answer 3 · answered Oct 29 '10 at 00:02

1

Have you looked into stop? This will allow you to catch exceptions that you define.

answered Oct 29 '10 at 00:02

Maiasaura

3 Answers3