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regen
2011 Aug 04
3
functions on rows or columns of two (or more) arrays
I realize this should be simple, but even after reading over the several
help pages several times, I still cannot decide between the myriad "apply"
functions to address it. I simply want to apply a function to all the rows
(or columns) of the same index from two (or more) identically sized arrays
(or data frames).
For example:
> a=matrix(1:50,nrow=10)
>