Have you checked that that time exists in the time zone you are using? From
?ISOdatetime:
Note
...
Remember that in most timezones some times do not occur and some occur twice because of transitions to/from summer time. What happens in those cases is OS-specific.
You could try working out what your system is using as the transition to/from
summer time. (If you need to generate times that are 2 hours after midnight,
try using ISOdatetime to generate the midnight times and add 2 hours).
On my system, all this works fine:
ISOdatetime(1995,03,26,2,0,0)
[1] "1995-03-26 02:00:00 MST"
ISOdatetime(1995,03,26,0,0,0) + 2 * 60 * 60
[1] "1995-03-26 02:00:00 MST"
sessionInfo()
R version 2.8.1 (2008-12-22)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] TimeWarp_0.7 abind_1.2-0 trackObjs_0.8-0 tap.misc_1.0
[5] bmc.misc_1.0 RtTests_0.1-5
-- Tony Plate
Pedro de Barros wrote:
Hi All,
I am watching a strange behaviour of ISOdatetime. In my work computer, I
get NA when I try to do
> ISOdatetime(1995,03,26,2,0,0)
[1] NA
But on other dates and/or times (hour) works OK
> ISOdatetime(1995,03,25,2,0,0)
[1] "1995-03-25 02:00:00 GMT"
In my home computer, I do not have this problem.
I am running the same version of R (2.8.1 patched) on both machines, the
same version of Gnu Emacs (22.3.1) and the same version of ESS (5.3.10).
Both are running Windows XP. Has anyone experienced this before?
Pedro
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