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2010 Oct 27
1
return NA instead zero when summing over an empty range?
...s with na.rm = TRUE). Is there some way to make it return NA in that case just like colMeans does? Or any other function or some good way to achieve that? Any ideas are be welcome. Regards, Martin Ivanov ----------------------------------------------------------------- ????? ?????????? ?????? ??? Vesti.bg! http://www.vesti.bg/