[Rd] Generate NA of specified type

[Tony Plate]

I just do as.integer(NA), as.numeric(NA), as.character(NA), etc.
-- Tony Plate

On 5/5/2010 11:57 AM, Hadley Wickham wrote:
> Hi all,
>
> Is there an existing function that provides the correct type of
> missing value for a given vector? e.g.
>
> NAof(1:3) # NA_integer_
> NAof(pi) # NA_real_
> NAof("a") # NA_character_
> NAof(T) # NA
>
> ?
>
> Thanks,
>
> Hadley
>
>