Have you tried 'filter'? > x <- 1:20 > filter(x,filter=rep(1,5)) Time Series: Start = 1 End = 20 Frequency = 1 [1] NA NA 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 NA NA >
On 2/13/08, joshv <[EMAIL PROTECTED]> wrote: > > > Hello, I'm new to R and would like to know how to create a vector of > "rolling > sums". (I have seen the Rmetrics package and the rollMean function and I > would like to do the same thing except Sum instead of Mean.) I imagine > someone has done this, I just can't find it anywhere. > > Example: > x <- somevector #where x is 'n' entries long > > #what I would like to do is: > > x1 <- x[1:20] > output1 <- sum(x1) > > x2 <- x[2:21] > output2 <- sum(x2) > > x3 <- ... > > ouput <- c(output1, output2, ...) > > > Thanks, > JV > -- > View this message in context: > http://www.nabble.com/rolling-sum-%28like-in-Rmetrics-package%29-tp15459848p15459848.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
