[R] lubridate concatenation issue

[Peter Ehlers]

On 2012-11-16 04:39, arun wrote:
> HI,
> Sys.setenv(TZ="GMT")
>   c(d)
> #[1] "2011-12-31 GMT"
>
> #or
> Sys.setenv(TZ="UTC")
>   c(d)
> #[1] "2011-12-31 UTC"
>
> Hope it helps.
> A.K.
>

Yes, but c(d) will still not have a 'tzone' attribute.
So the OP is okay as long as his further operations
do not depend on the presence of that attribute.

Peter Ehlers

>
>
> ----- Original Message -----
> From: Andre Zege <azege at yahoo.com>
> To: "r-help at r-project.org" <r-help at r-project.org>
> Cc:
> Sent: Thursday, November 15, 2012 9:36 PM
> Subject: [R] lubridate concatenation issue
>
> I took a look at Hadley's lubridate which seems a very neat package, but i am having a small problem with  concatenating lubridates to build vectors of it. Namely when function c( )  is applied to lubridate seems to change time to a local timezone in this particular case changing the date to previous one.
>
>> d<-ymd('20111231')
>> d
> [1] "2011-12-31 UTC"
>> c(d)
> [1] "2011-12-30 19:00:00 EST"
>
>
>
> Is this the expected behavior and if yes, how could it be avoided for this function and the others that possibly do the same? I mean, i could create the date in my local timezone and avoid this, but if i don't do it, is there an option in environment or functions to avoid this from happening -- otherwise i need to watch out for nasty bugs.
>
>
> Thanks
> Andre
>      [[alternative HTML version deleted]]
>
>
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