On Mon, Aug 6, 2012 at 5:27 PM, R. Michael Weylandt
wrote:
> On Mon, Aug 6, 2012 at 9:53 AM, Liviu Andronic wrote:
>> On Mon, Aug 6, 2012 at 4:48 PM, Liviu Andronic
>> wrote:
>>> string, something that I find strange. At best NA is the equivalent of
>>> an empty string.
>
> Certainly not to my
elp-bounces@r-
> project.org] On Behalf Of Bert Gunter
> Sent: Monday, August 06, 2012 10:43 AM
> To: Liviu Andronic
> Cc: r-help@r-project.org Help
> Subject: Re: [R] issue with nzchar() ?
>
> Liviu:
>
> Well, as usual, to a certain extent this is arbitrary and the only
>
Liviu:
Well, as usual, to a certain extent this is arbitrary and the only
issue is whether it is documented correctly.
To me, NA (of whatever mode) means ""indeterminate" or "unknown," so
since "" is known and of length 0, I would have expected NA as a
return. But the point is, not what our parti
On Mon, Aug 6, 2012 at 9:53 AM, Liviu Andronic wrote:
> On Mon, Aug 6, 2012 at 4:48 PM, Liviu Andronic wrote:
>> string, something that I find strange. At best NA is the equivalent of
>> an empty string.
Certainly not to my mind, unless you think that zero and NA should be
the same for integers
On Mon, Aug 6, 2012 at 4:48 PM, Liviu Andronic wrote:
> string, something that I find strange. At best NA is the equivalent of
> an empty string. In this sense, if you Hmisc::describe() the vector
> you get, as I would expect, that in the context of character vectors
> NA and '' values are conside
Dear all
I'm a bit surprised by the results output from nzchar(). The help page
says: "nzchar is a fast way to find out if elements of a character
vector are *non-empty strings*." (my emphasis. However, if you do
> x <- c(letters, NA, '')
> nzchar(x)
[1] TRUE TRUE TRUE TRUE TRUE TRUE TRUE
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