[R] R Newbie, please help!

[Jeff08]

Hey Josh,

Thanks for the quick response!

I guess I have to switch from the Java mindset to the matrix/vector mindset
of R.

Your code worked very well, but I just have one problem:

Essentially I have a time series of stock A, followed by a time series of
stock B, etc.
So there are break points in the data (the points where it switches stocks
have incorrect returns, and should be NA at t=0 for each stock)

Is there an easy way to account for this in R?
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