[R] Splitting a vector

[Gerrit Eichner]

Hello, Long Vo,

take a look at the help page of split or directly at

str(Y)

They tell you that Y is a list, and list components are indexed using 
"[[":

mean(Y[[4]])

should do what you want.

   Regards  --  Gerrit


> This does what I needed. However, as the output is a list object, is there
> any way to apply a function to such object? For example if I want to compute
> the mean for the 4th subvectors, I can't simply use:
> #####
> Y=split(X,as.numeric(gl(length(X),3,length(X))))
> mean(Y[4])
> #####
> as the error message shows "argument is not numeric or logical"
>
>
>
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