On Aug 12, 2014, at 1:51 PM, Erin Hodgess <erinm.hodg...@gmail.com> wrote:
> Hello!
>
> If I would like to generate a sequence of seconds for a date, I would do
> the following:
>
> x <- seq(from=as.POSIXct(2014-08-12 00:00:00),to=as.POSIXct(2014-08-12
> 23:59:59),by="secs")
>
> What if I just want the seconds vector without the date, please? Is there
> a convenient way to create such a vector, please?
>
> thanks,
> Erin
Erin,
Do you want just the numeric vector of seconds, with the first value being 0,
incrementing by 1 to the final value?
x <- seq(from = as.POSIXct("2014-08-12 00:00:00"),
to = as.POSIXct("2014-08-12 23:59:59"),
by = "secs")
> head(x)
[1] "2014-08-12 00:00:00 CDT" "2014-08-12 00:00:01 CDT"
[3] "2014-08-12 00:00:02 CDT" "2014-08-12 00:00:03 CDT"
[5] "2014-08-12 00:00:04 CDT" "2014-08-12 00:00:05 CDT"
> tail(x)
[1] "2014-08-12 23:59:54 CDT" "2014-08-12 23:59:55 CDT"
[3] "2014-08-12 23:59:56 CDT" "2014-08-12 23:59:57 CDT"
[5] "2014-08-12 23:59:58 CDT" "2014-08-12 23:59:59 CDT"
> head(as.numeric(x - x[1]))
[1] 0 1 2 3 4 5
> tail(as.numeric(x - x[1]))
[1] 86394 86395 86396 86397 86398 86399
Regards,
Marc Schwartz
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