[R] excluding NAs in data frame without deleting rows
villandl at dms.umontreal.ca
Fri May 29 17:10:33 CEST 2009
Wade Wall wrote:
> 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,
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
The rowSums() and colSums() functions have a "na.rm" argument that you
could set to TRUE.
Would this solve your problem?
McGill University Health Center -
Montreal Children's Hospital Research Institute/
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