[R] A problem on zoo object

[Bogaso]

No reply yet. Is my question is not clear? Please let me know.

Thanks


Bogaso wrote:
> 
> Thanks Gabor for this reply. However can please clarify one more thing?
> How I want to create a list,
> wherein each member of that list is the monthly observations. For example,
> 1st member of list contains daily observation of 1st month, 2nd member
> contains daily observation of 2nd month etc.
> 
> Thanks
> 
> 
> 
> 
> Gabor Grothendieck wrote:
>> 
>> Try this:
>> 
>> z <- zooreg(1:365, start = as.Date("2001-01-01"), freq = 1)
>> f <- head
>> tapply(seq_along(z), as.yearmon(time(z)), function(ix) f(z[ix]))
>> 
>> where you should replace f with a function that does whatever
>> you want with each month's data.  Here we just used head as
>> an example.
>> 
>> 
>> On Wed, Jul 1, 2009 at 5:17 AM, Bogaso<bogaso.christofer at gmail.com>
>> wrote:
>>>
>>> I have a zoo object on daily data for 10 years. Now I want to create a
>>> list,
>>> wherein each member of that list is the monthly observations. For
>>> example,
>>> 1st member of list contains daily observation of 1st month, 2nd member
>>> contains daily observation of 2nd month etc.
>>>
>>> Then for a particular month, I want to divide all observations into 3
>>> parts
>>> (arbitrary) and then want to calculate some statistics on each part for
>>> each
>>> month. Therefore for a particular month, I will have 3 means (suppose,
>>> statistic is mean).
>>>
>>> Can anyone throw some light on how to do that?
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>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>> 
>> 
> 
> 

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