just convert your vector from 0,1 to .995,1.005 and use cumprod On Thu, Apr 8, 2010 at 10:22 AM, Redhwan <redhwanza...@hotmail.com> wrote:
> > Hi > > So my particular problem is this: > > I have a row vector of length 5200 elements - specifically created by > > x<-rbinom(5200,1,0.5) > y<-matrix(x,nrow=1,ncol=5200) > y > > now, each element is either a 0 or a 1 - e.g. it could be > (0,1,1,1,1,0,0,0,1,1,1) e.t.c. > > when the element is a 1, i need to multiply a number (say 1000) by 1.005, > and if it is 1 again, multiply it _again_ by 1.005. > > so for example, say i have the vector (1,1). it would be 1000 X 1.005 X > 1.005 > > and if the element is 0, then i need to multiply by .995 - i.e. say the > vector was (1,1,0) the value would be > 1000 X 1.005 X 1.005 X .995. > > so my questions are these: > 1. how do i make R do this automatically for each element and > 2. as each term is multiplied, i want to graph the progress of the initial > 1000. > > any help would be greatly appreciated. > > > -- > View this message in context: > http://n4.nabble.com/R-Problem-using-elements-in-a-vector-tp1774136p1774136.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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<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 that you are trying to solve? [[alternative HTML version deleted]] ______________________________________________ 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.
