Peter Dalgaard <[EMAIL PROTECTED]> writes:
> Hmm...
>
>> as.character(v)
> [1] NA "NA" "NA"
>
> This does look like a leftover from times when there was no character
> NA in the language. It is the kind of thing you need to be very
> careful about fixing though. (I have a couple of scars from
> a
Okay ... I'll try to attach that patch once more ... (does this list
only accept certain exertions for attachments? I used '.patch', but it
must have been filtered off, so I'll try '.patch.txt' now ...)
+mt
Index: R/src/library/base/man/character.Rd
==
Also, Splus 7 has a different behaviour from R:
> sapply(v, is.na)
a b c
F T T
> sapply(as.character(v), is.na)
[1] F F F
> as.character(v)
[1] "\"NA\"" "NA" "NA"
In R, it remains logical: if it isn't in character mode, then
as.character always turns NA's into "NA"'s. If that behaviour is no
Seth Falcon <[EMAIL PROTECTED]> writes:
> Hi all,
>
> In some circumstances, as.character applied to a list converts real
> NA's into the string "NA". Propagation of NAs is something R does
> very well and unless there are good reasons for losing the NA, it
> would improve the consistency w.r.t.
Hi all,
In some circumstances, as.character applied to a list converts real
NA's into the string "NA". Propagation of NAs is something R does
very well and unless there are good reasons for losing the NA, it
would improve the consistency w.r.t. NA handling for as.character to
behave differently.
