On 21.10.2010 19:53, David Winsemius wrote:

On Oct 21, 2010, at 11:59 AM, omerle wrote:

Thanks for you answer.
It s sufficient but I d like to know why my system think I am CEST and
yours think your are EDT.

It probably acquired it from your OS at the time of R's installation.

No, the OS setting when R was started is used.

Uwe



(And that was not correct as I discovered.)

Can I change it ?

Of course. (But not necessarily the way I would have predicted.)

?Sys.setlocale

 > Sys.getlocale()
[1] "en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8"

The arguments (and LC_TIME is but one of the arguments) are system
dependent and you have not supplied that information. Furthermore, my
efforts at changing my system (Mac 10.5.7/R2.11.1) were not successful.

 > Sys.setlocale(category = "LC_ALL" , locale= "de_DE")
[1] "de_DE/de_DE/de_DE/C/de_DE/en_US.UTF-8"
 > date()
[1] "Thu Oct 21 13:35:33 2010"
 > Sys.time()
[1] "2010-10-21 13:35:39 EDT"

?Sys.timezone

Made it clear that it is an OS setting and changing it in my system does
the trick:

 > Sys.time()
[1] "2010-10-21 19:48:42 CEST"


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