I was careless.
Here is a better example of what I am trying to. With the '<<-' you
offered.
?<<-
That was exactly what I needed, thankyou.
cheers
Worik
N <- 10
## x simulate a return series
x <- runif(N)-.5
## Build an array of cumulative returns of a portfolio starting with $1 as
it changes over time
y <- rep(0, length(x))
y[1] <- 1+1*x[1]
for(i in 2:N){
y[i] <- y[i-1]+y[i-1]*x[i]
}
## y is that return series. Use
test.1 <- function(r.in){
v <- rep(0, length(r.in))
foo <- function(i, r){
if(i == 1){
s <- 1
}else{
s <<- v[i-1]
}
v[i] <<- s + s*r[i]
return(v[i])
}
return(sapply(1:length(r.in), foo, r.in))
}
z <- test.1(x)
y
z
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