The "y" object within the loop returns a list and you are trying to put the
first row of the 2nd column of the list (which refers to a vector of length 1
to i) into the object z, which is vector. I am not sure at all what you are
trying to end up with.
Scott
On Wednesday, March 2, 2011 at 9:19 PM, eric wrote:
> What is wrong with this loop ? I am getting an error saying incorrect number
> of dimensions y[i,2]
>
> x <- as.data.frame(runif(2000, 12, 38))
> z <-numeric(length(x))
> y <- as.data.frame(z)
> for(i in 1:length(x)) {
> y <- ifelse(i < 500, as.data.frame(lowess(x[1:i,1], f=1/9)) ,
> as.data.frame(lowess(x[(i-499):i,1], f=1/9)))
> z[i] <-y[i,2]
> }
>
> --
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>
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