R devel - May 2014 - Historical NA question

Can anyone tell me what the significance of 1954 is in R's NA?

Thanks!

Hadley

-- 
http://had.co.nz/

Hint: Ross will be 60 this year.

luke

On Sat, 3 May 2014, Hadley Wickham wrote:
> Can anyone tell me what the significance of 1954 is in R's NA?
>
> Thanks!
>
> Hadley
>
>
-- 
Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:   luke-tierney at uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu

On 03/05/2014 12:39 PM, Hadley Wickham wrote:
> Can anyone tell me what the significance of 1954 is in R's NA?
>
Just ask R:

 > 2*(1-pnorm(1954))
[1] 0
 > 2*(1-pnorm(1954)) %in% NA
[1] 0
 >