Error in apply(x2, 1, diff) : dim(X) must have a positive length

Yes, I just checked out the bootstrap package: the problem is that it
passes vectors (not matrices) to your function and thats why you get
the error you do. Just use diff() instead of apply(,, diff) in your
function and you'll be fine.

Michael

Thanks.

I use the bootstrap() function from the bootstrap package. Let me try it
again to see if I get any luck :)

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