Greetings -
I'm battling POSIXct, as per the code below. My input is actually an XL
file, but the weird results below correctly model what I am seeing in my
program.
Before I punt and use lubridate or timeDate, could anyone please help me
understand why POSIXct forces my variable back to GMT?
I suspect that I'm not properly coding the tzone value, but it does not
throw an error as-is.
> tstamp <- "2011-05-22 11:45:00 MDT"
> mode(tstamp)
[1] "character"
>
> dateP <- as.POSIXct(tstamp, origin="1970-01-01", tzone="MDT")
> mode(dateP)
[1] "numeric"
> dateP
[1] "2011-05-22 11:45:00 MDT"
>
> dateN <- as.numeric(dateP)
> dateN
[1] 1306086300
>
> dateP2 <- as.POSIXct(dateN, origin="1970-01-01", tzone="MDT")
> dateP2
[1] "2011-05-22 18:45:00 MDT"
Many thanks.
Galen Moore
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