Hi all
I want to conditionally operate on certain elements of a matrix, let me
explain it with a simple vector example
> z<- c(1, 2, 3)
> zz <- c(0,0,0)
> null <- (z > 2) & ( zz <- z)
> zz
[1] 1 2 3
why zz is not (0, 0, 3) ?????
the null <- assignment is to keep the console silent
in the other hand, it curious that null has reasonable values
> null
[1] FALSE FALSE TRUE
Thanks in advance
Ulisses
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