[R] creating new vector
Gabor Grothendieck
ggrothendieck at gmail.com
Fri Mar 10 13:53:40 CET 2006
Try this:
x <- 1:20
c(rowsum(x, gl(length(x), 5, length(x)))
If the length of x is not a mulitple of 5 there will be a stub at the
end containing the sum of less than 5 elements.
On 3/10/06, Amir Safari <amsa36060 at yahoo.com> wrote:
>
>
> Hi R Users,
> I don't know how much is difficult my problem and even it is possible to solve in R or not.
> Given a vector with 2000 observations. I want to creat a new vector from that vector so that new vector be the sum of every 5 observations sequently. That is , each new observation is sum of every 5 sequent observations, from the first observation of previous vector to the end. So new vector must include 500 observations. My effort did not work in R.
> Do you have any way? Thanks a lot for any help.
> Amir
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