Thanks a lot and thanks to Rui
Troels
Den 18-02-2015 kl. 20:14 skrev peter dalgaard:
On 18 Feb 2015, at 18:45 , Troels Ring <tr...@gvdnet.dk> wrote:
dear friends - sorry to ask another simple question -
I have dates set up as this:
dates #[1] 2003-01-21 01:08:00
To handle it I did
as.POSIXlt(dates) "2003-01-21 01:08:00 CET"
but noticed that during write.table it was apparently better to take it further
as.numeric(as.POSIXct(as.POSIXlt(dates)) 1043107680
And this works fine for modeling but now I would like to have it back as POSIXlt
as.POSIXlt requires an origin, if I'm right.
So how is it done?
Like this?
as.POSIXlt(1043107680, origin='1970-1-1')
[1] "2003-01-21 01:08:00 CET"
(Time zones may require special care, though.)
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