stop {base} | R Documentation |
stop
stops execution of the current expression, prints the
message given as its argument, then executes an error action.
geterrmessage
gives the last error message.
stop(..., call. = TRUE) geterrmessage()
... |
character vectors (which are pasted together with no
separator) or NULL . |
call. |
logical, indicating if the call should become part of the error message. |
The error action is controlled by the current error handler set by
options(error=)
. The default behaviour (the NULL
error-handler) in interactive use is
to return to the top level prompt, and in non-interactive use to
(effectively) call q("no", status=1, runLast=FALSE
).
Errors will be truncated to getOption("warning.length")
characters, default 1000.
geterrmessage
gives the last error message, as character string
ending in "\n"
.
warning
, try
to catch errors and retry,
and options
for setting error handlers.
stopifnot
for validity testing.
options(error = expression(NULL))# don't stop on stop(.) << Use with CARE! >> iter <- 12 if(iter > 10) stop("too many iterations") tst1 <- function(...) stop("dummy error") tst1(1:10,long,calling,expression) tst2 <- function(...) stop("dummy error", call. = FALSE) tst2(1:10,long,calling,expression,but.not.seen.in.Error) options(error = NULL)# revert to default