[R] difference between date and times

[Ista Zahn]

Hi Karine,

time1 <- as.POSIXct("2007-02-21 05:19:00")
time2 <- as.POSIXct("2007-02-20 14:21:53")
difftime(time1, time2)

should get you started.

-Ista


On Tue, Feb 23, 2010 at 9:48 AM, karine heerah <karine.heerah at hotmail.fr> wrote:
>
> Hi,
>
>
>
> I have date and time in a format like this: " 2007-02-21 05:19:00".
>
> Do you which function i can use to derterminate the difference in time between this value and an other one.
>
> For exemple:
>
>
>
> this one : 2007-02-21 05:19:00
>
> and this one : 2007-02-20 14:21:53
>
>
>
> Thanks a lot,
>
> Karine H.
>
>
>
>
>
>
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-- 
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org