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nitpic
2001 Oct 04
2
Characters subsetted with NA (was: Several R vs S-Plus issues)
Hello, R-devel!
I posted to R-help, and (inappropriately) to R-bugs, this R/S-Plus difference:
> LETTERS[c(NA,2)] in S is c("","B"), but in R is c("NA","B")
Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> wrote:
> I think we do not want to change this. ...
> R> is.na(LETTERS[c(NA,2)])
[1] TRUE FALSE
> so we really have NA but it is