[R] as.date

[arnaud Gaboury]

TY for the tip. The lower case is in fact the culprit.





> -----Original Message-----
> From: Erik Iverson [mailto:eriki at ccbr.umn.edu]
> Sent: Tuesday, June 01, 2010 6:05 PM
> To: arnaud Gaboury
> Cc: r-help at r-project.org
> Subject: Re: [R] as.date
> 
> 
> > Where does the problem comes from?? Maybe from my sytem date ??
> 
> Simply from not reading the options carefully enough, from ?strptime,
> 
>       '%y' Year without century (00-99). If you use this on input,
> which
>            century you get is system-specific.  So don't!  Most often
>            values 00 to 68 are prefixed by 20 and 69 to 99 by 19 - that
>            is the behaviour specified by the 2001 POSIX standard, but
> it
>            does also say 'it is expected that in a future version of
>            IEEE Std 1003.1-2001 the default century inferred from a
>            2-digit year will change'.
> 
>       '%Y' Year with century.
> 
> 
> You want %Y, not %y.