| traceback {base} | R Documentation |
traceback() prints the call stack of the last error, i.e., the
sequence of calls that lead to the error. This is useful when an
error occurs with an unidentifiable error message.
This stack is stored as a list in .Traceback,
which traceback prints in a user-friendly format.
traceback()
traceback() returns nothing, but prints the deparsed call stack
deepest call first. The calls may print on more that one line, and
the first line is labelled by the frame number.
foo <- function(x) { print(1); bar(2) }
bar <- function(x) { x + a.variable.which.does.not.exist }
## Not run:
foo(2) # gives a strange error
traceback()
## End(Not run)
## 2: bar(2)
## 1: foo(2)
bar
## Ah, this is the culprit ...