[R] Mean of dates

[Achim Zeileis]

On Fri, 24 Apr 2015, Jue Lin-Ye wrote:

> Dear fellow R-help members,
>
> If my data is
>
> YYYY MM DD HH
> 2015 04 24 01
> 2015 04 24 02
> 2015 04 24 06
>
> Where
>
> YYYY: year
> MM:month
> DD:day
> HH: hour
>
> How could I calculate the mean of the ISOdatetime(YYYY,MM,DD,HH,0,0) of
> these?

With the mean() method? On my machine:

R> mean(ISOdatetime(YYYY,MM,DD,HH,0,0))
[1] "2015-04-24 03:00:00 CEST"

hth,
Z

> Note: I set minutes and seconds to 0, as I don't have data for them.
>
> ?Thank you in advance!?
>
> -- 
> Jue Lin-Ye
>
> ---------------------------------------------------------------
> Civil Engineering phD candidate
> Maritime Engineering Laboratory (LIM)
> Universitat Politècnica de Catalunya (UPC)
> C/Jordi Girona 1-3, Barcelona 08034 (Spain)
> -----------------------------------------------------------------
>
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>
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