"Jean-Louis Abitbol" <[EMAIL PROTECTED]> wrote:
> Dear R Helpers,
> I need to read time from a .csv file which is formated as chartime
> (09:12:00) below. I need to add one minute (cf chartime2).
> Then I need to output the value just as 09:13 without the seconds for
> writing a csv file and input in another program.
[...]
The numeric representation of chron objects is expressed in day units, and
there are sensible arithmetic methods:
chrontime <- times("09:12:00") + 1/24/60
and then:
paste(hours(chrontime), minutes(chrontime), sep=":")
Cheers,
--
Seb
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