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
spec...@stat.berkeley.edu
On Fri, 26 Feb 2010, khaz...@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
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