I don't have an answer, but actually, I would have expected
as.POSIXct(T1, tz="UTC")
to work...
Looks like as.POSIXct cannot convert from class "POSIXct"
Ivan
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Ivan Calandra, PhD
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Le 09/05/2016 à 15:24, Arnaud Mosnier a écrit :
Dear UseRs,
I know two ways to convert dates and time from on time zone to another but
I am pretty sure that there is a better (cleaner) way to do that.
Here are the methods I know:
## The longest way ...
T1 <- as.POSIXct("2016-05-09 10:00:00", format="%Y-%m-%d %H:%M:%S",
tz="America/New_York")
print(T1)
T2 <- as.POSIXct(format(T1, tz="UTC"), tz="UTC") # format convert it to
character, so I have to convert it back to POSIXct afterward.
print(T2)
## The shortest but probably not the cleanest ...
attributes(T1)$tzone <- "UTC"
print(T1)
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