[R] question to make a vector without loop

Phil Spector spector at stat.berkeley.edu
Fri Feb 26 19:12:19 CET 2010

Khazaei -
    I think

mapply(function(x,ind)x * a / (b + ind),c(NA,w),c(NA,1:length(w)))

does what you want, but since you didn't include a reproducible
example, I can't tell for sure.

 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu

On Fri, 26 Feb 2010, khazaei at ceremade.dauphine.fr wrote:

> Hello all,
> I want to define a vector like w[k+1]=w[k]*a/(b+k) for k=1,...,N-1 without
> use loop. Is it posible to do in R?
> Regards
> khazaei
> ______________________________________________
> R-help at 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.

More information about the R-help mailing list