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Re: st: Distorted time when building SIFs from components
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Distorted time when building SIFs from components
Date
Wed, 25 Dec 2013 13:00:43 +0000
<>
Use -double- for your variable, not -float-.
Nick
[email protected]
On 25 December 2013 12:44, Milena Przheska
<[email protected]> wrote:
> Dear Statalist members,
>
> I have a dateime variable 'time' with format %tc and a 'date' variable
> with only the date. I needed a variable that will show the date and
> the hour, so that observations happening on the same date in the same
> hour would have same time stamp. Therefore, I first extracted the
> year, month and day from 'date' and hour from 'time'. Then I generated
> two separate variables with values 0, to serve as minutes and seconds.
> Finally, I build a time stamp from these components, but instead of
> getting datetime variable with zero minutes and seconds, I got a
> variable that had altered hour, minutes and second.
>
> Can anyone please let me know why this happens and how can I fix it?
>
> Commands:
>
> gen double date = dofc(time)
> format date %td
>
> gen double Y = year(date)
>
> gen double M = month(date)
>
> gen double D = day(date)
>
> gen double h = hh(time)
>
> gen double m = 0
>
> gen double s = 0
>
> gen short_time = mdyhms(M, D, Y, h, m, s)
> format short_time %tc
>
>
> Results:
>
> m s h Y M D short_time
> 0 0 18 2013 5 22 22may2013 17:59:21
> 0 0 14 2013 5 26 26may2013 13:59:40
> 0 0 6 2013 5 4 04may2013 05:58:58
> 0 0 20 2013 5 9 09may2013 20:00:14
> 0 0 2 2013 6 5 05jun2013 01:59:13
> 0 0 6 2013 7 8 08jul2013 05:59:40
> 0 0 6 2013 7 8 08jul2013 05:59:40
>
>
> I would appreciate your help.
>
> Thank you,
> Milena
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