Thanks a lot - good idea:
I put
Sys.setenv(TZ = "UTC")
ahead of the code - solves the problem!
Thanks a lot
Den 07-04-2017 kl. 09:26 skrev Mark Leeds:
> Hi Troels: This is off-list so as to not clog the list with my noise
> because my suggestion may not work. I really don't know that much
> about time-zones. but. I ran your code and it "worked" but all the
> times were correctly time stamped but they changed from UTC to GMT.
> in time-zone. In your
> case, they changed to something and the time got shifted it looks
> like. So, definitely it has to do with how your time-zones are set. In
> my .Rprofile, I have something.
> Let me check. ... time passes ..... I have below in my .Rprofile. So
> my guess is that, if you want things to remain UTC, then put below
> in your .Rprofile but change it from "GMT" to "UTC". Others may have
> different solutions but that might work. If you don't have that, then
> R decides what to use and I'm not sure how it decides.
>
> Sys.setenv(TZ = "GMT")
>
> #print("LOADING MASS LIBRARY")
> #ibrary("MASS")
> #print("LOADING LATTICE LIBRARY")
> #library("lattice")
>
>
>
>
> :~>
>
> On Fri, Apr 7, 2017 at 3:00 AM, Troels Ring <tr...@gvdnet.dk
> <mailto:tr...@gvdnet.dk>> wrote:
>
> Thanks a lot - perhaps it is just understanding how times dates
> are handled, sorry to bother if that is just the case
>
> C[1]==A[1] # TRUE
>
> but
>
> C[1]
> [1] "2013-03-28 07:00:00 CET"
> A[1]
> [1] "2013-03-28 06:00:00 UTC"
>
>
>
>
>
>
> Den 07-04-2017 kl. 08:27 skrev Ulrik Stervbo:
>
> Hi Troels,
>
> I get no error. I think we need more information to be of any
> help.
>
> Best wishes,
> Ulrik
>
> On Fri, 7 Apr 2017 at 08:17 Troels Ring <tr...@gvdnet.dk
> <mailto:tr...@gvdnet.dk>> wrote:
>
> Dear friends - I have further problems handling
> dates_times, as
> demonstrated below where concatenating two formatted
> vectors of
> date_times results in errors.
> I wonder why this happens and what was wrong in trying to
> take these two
> vectors together
> All best wishes
> Troels Ring
> Aalborg, Denmark
> Windows
> R version 3.3.2 (2016-10-31)
>
>
> A <- structure(c(1364450400, 1364450400, 1364536800,
> 1364623200,
> 1364709600,
> 1364796000, 1364882400, 1364968800, 1365055200,
> 1365141600, 1365228000,
> 1365314400, 1365400800), class = c("POSIXct", "POSIXt"),
> tzone = "UTC")
> A
> B <- structure(c(1365141600, 1365228000, 1365314400,
> 1365400800,
> 1365487200,
> 1365573600, 1365660000, 1365746400, 1365832800,
> 1365919200, 1366005600,
> 1366092000), class = c("POSIXct", "POSIXt"), tzone = "UTC")
> B
> C <- c(A,B)
> C
>
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