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ane
2008 Oct 31
4
[ifelse] how to maintain a value from original matrix without probs?
Dear all,
I have a matrix with positive and negative values.
>From this I would like to produce 2 matrices:
1st - retaining positives and putting NA in other positions
2nd - retaining negatives and putting NA in other positions
and then apply rowMeans for both.
I am trying to use the function ifelse in the exemplified form:
ifelse(A>0,A,NA)
but by putting A as a 2nd parameter it