[R] How to extract an interval of "hour:minute" type

[jim holtman]

I think one of the suggestion was to use something like, assuming you
have the time in POSIXct

format(x$time, format = "%H:%M:%S") >= "20:10:00" & format(x$time,
format = "%H:%M:%S") <= "21:00:00"

This takes the 'date' out of the equation.  You can always write a
function to do this for you.



On Tue, Dec 27, 2011 at 1:02 PM, ikuzar <razuki at hotmail.fr> wrote:
> Jim Holtman > I'd like to compare "hour1:min1:sec1" with "hour2:min2:sec2".
> I know how to do to compare "year1-mon1-day1 hour1:min1:sec1" with
> "year2-mon2-day2 hour2:min2:sec2" by converting 'character' into POSIXlt
>
> but
>
> I'd like to konw if there is another way to do this comparison without
> converting my POSIXLT column into 'character' .
> If possible, I want to work with DateTime format and not with string so that
> I do not make new conversions
>
>
>
> --
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.