How does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
I have looked at recover
and browse
and traceback
but, well, they seemed to be close but not what I am looking for.
See help(tryCatch)
:
Conditions are signaled by '
signalCondition
'. In addition, the
'stop
' and 'warning
' functions have been modified to also accept
condition arguments.
and later under 'See Also':
'
stop
' and 'warning
' signal conditions, and 'try
' is essentially a simplified version of 'tryCatch
'.
so you probably want stop
.