[R] How to catch Error Messages in R

[Erik Iverson]

?try

guox at ucalgary.ca wrote:
> As we knew, if a function is not used correctly,
> an error message will throw/display in R:
> 
>> rnorm(-1)
> Error in rnorm(-1) : invalid arguments
> 
> I would like to catch the error message or assign an error message to a
> variable so that I can use them some where else.
> So, how to catch error messages in R? Thanks,
> 
> -james
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.