Dear list,

I have an object of class zoo and use time() to extract the times:
> class(Equiwz2010)
[1] "zoo"
> a = time(Equiwz2010)


How could I convert the elements of a to the week of the year
as integers (between 1 and 52)?

I've tried extracting the month and the day,
> as.vector(days(a[30]))
[1] "12"
> as.vector(months(a[30]))
[1] "diciembre"

but cannot find the way of getting the month as an integer
(i.e., 12 for the example above).

Thanks!

*CRISTINA*

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