See aggregate.zoo and maybe ?rollapply
For date manipluations see R News 4/1 help desk article and the table at
the end of that article, in particular.
Suggest you also read and follow the last line on every r-help message
when posting.
On 12/10/06, Alfonso Sammassimo [EMAIL PROTECTED] wrote:
Hi
Hi all,
Please forgive this newbie posting to the list for the first time if I
haven't followed proper procedure. I have read through many of the archives
and find them most useful in learning R.
I have ten years daily data (stock closing prices) which I read in zoo
format. I am having
