Reputation: 3656
I have a long R script that throws some warnings, which I can ignore. I could use
suppressWarnings(expr)
for single statements. But how can I suppress warnings in R globally? Is there an option for this?
Upvotes: 226
Views: 297664
Reputation: 101
As discussed in other answers, you probably want to set options(warn = -1) and revert to the old behavior. The withr
packages allows you to set an option value and automatically revert to the old behavior.
# install.packages("withr")
withr::with_options(.new = list(warn = -1),
{code})
Alternatively, the local_*
functions have the same effect until the end of the function they are included in.
function() {
withr::local_options(.new = list(warn = -1)
{ code }
}
Upvotes: 5
Reputation: 811
I have replaced the printf
calls with calls to warning
in the C-code now. It will be effective in the version 2.17.2 which should be available tomorrow night. Then you should be able to avoid the warnings with suppressWarnings()
or any of the other above mentioned methods.
suppressWarnings({ your code })
Upvotes: 79
Reputation: 9067
You could use
options(warn=-1)
But note that turning off warning messages globally might not be a good idea.
To turn warnings back on, use
options(warn=0)
(or whatever your default is for warn
, see this answer)
Upvotes: 287
Reputation: 1618
You want options(warn=-1)
. However, note that warn=0
is not the safest warning level and it should not be assumed as the current one, particularly within scripts or functions. Thus the safest way to temporary turn off warnings is:
oldw <- getOption("warn")
options(warn = -1)
[your "silenced" code]
options(warn = oldw)
Upvotes: 144
Reputation: 60000
Have a look at ?options
and use warn
:
options( warn = -1 )
Upvotes: 9