[R] excluding NAs in data frame without deleting rows

Wade Wall wade.wall at gmail.com
Fri May 29 16:46:37 CEST 2009

Hi all,

I have a binary matrix with NAs included.  Each row and column
includes at least one NA, so I don't want to omit them.  Is there a
way to sum across rows and columns, ignoring the NAs but not deleting
the row or column?  If not, I suppose I can write a loop function, but
I have learned that it is best to stay away from loops if possible.

Thanks for any help,


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