The chron package has a "times" class that represents times in
days and fractions of a day. See the help desk article in R News 4/1
and the references therein for more info. Using "times" class
the following one-line function, hms, will display produce the
hours:mm:ss format:
library(chron)
hms <- function(x)
sub("..:", ":", sprintf("%02.f%s", floor(24*x),
format(x%%1)))
# test this by creating a vector 3 "times" objects
x <- structure(pi*seq(3), class = "times")
hms(x) # "75:23:54" "150:47:47" "226:11:41"
On 1/4/06, herodote at oreka.com <herodote at oreka.com>
wrote:> Hy all,
>
> I wish to use the date function to draw againt the lifetime of a motor.
>
> This lifetime is given to me in Hours (it can go over 5000 hours)
>
> I'm unable to find how to convert this lifetime value to something like
%H:%M:%S because when R see 24H it says 1 day, i don't want that, i just
want %H:%M:%S with a value of %H higher than 24...
> for example:
> i've got this value in hours: 345.05 H
>
> I wish that R gives me : "345:3:0" or "345:03:00"
>
> What R function could do it?
>
> I've search for as.Date strptime... but none of these seems to be able
to put a value for %H greater than 23.
>
> i've browse the help and docs and found nothing (am i blind?).
>
> thks all
> guillaume.
>
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