[R] splitting time vector into days

[stephen sefick]

?aggregate
?window.zoo
?rollapply

anyway have a look at package zoo

On Tue, Sep 9, 2008 at 3:25 PM, Alexy Khrabrov <deliverable at gmail.com> wrote:
> Greetings -- I have a dataframe a with one element a vector, time, of
> POSIXct values.  What's a good way to split the data frame into periods of
> a$time, e.g. days, and apply a function, e.g. mean, to some other column of
> the dataframe, e.g. a$value?
>
> Cheers,
> Alexy
>
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-- 
Stephen Sefick
Research Scientist
Southeastern Natural Sciences Academy

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