Hi Kwesi,
Even without the data, it seems clear that you want something like a
rolling mean. Here is a simple function that will apply a function
like "mean" to successive bits of a vector of numbers:
collapse_values<-function(x,span,FUN="mean",na.rm=FALSE) {
jump<-span-1
newx<-rep(NA,length(x)-jump)
for(i in 1:length(newx))
newx[i]<-do.call(FUN,list(x[i:(i+jump)],na.rm=na.rm))
return(newx)
}
test<-1:12
names(test)<-month.abb
test
collapse_values(test,3)
[1] 2 3 4 5 6 7 8 9 10 11
Jim
On Mon, Jan 30, 2017 at 11:53 PM, Kwesi Quagraine
<starskykw...@gmail.com> wrote:
> Hello, I have a data with two variables nodes and index, I want to extract
> 3 months seasons, with a shift of 1 month, that is, DJF, JFM, FMA etc to
> OND. Was wondering how to go about it. Kindly find attached the data as csv.
> Any help will be appreciated.
>
> Regards,
> Kwesi
>
> --
> Try not to become a man of success but rather a man of value-Albert Einstein
>
> University of Cape Coast|College of Agriculture and Natural
> Sciences|Department
> of Physics|
> Team Leader|Recycle Up! Ghana|Technology Without Borders|
> Other emails: kwesi.quagra...@ucc.edu.gh|kwesi.quagra...@teog.de|
> Mobile: +233266173582
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