Hello, Try the following.
x <- 1:3*10 idx <- seq_along(x)[-1] rowSums(cbind(x[idx], x[idx-1])) Hope this helps, Rui Barradas Em 16-11-2012 14:50, e-letter escreveu:
Readers, If a vector consists of: 10 20 30 how to create a new vector based upon the results of calculations to the elements, e.g. addition of successive elements, so that a new vector would be: 30 50 i.e. 10+20, then 20+30, etc.? ______________________________________________ R-help@r-project.org 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.
______________________________________________ R-help@r-project.org 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.
