Rolf, I hear you.
But, after reflection, ie I looked at my situation again, it is great :-)-O el Sent from Dr Lisse's iPad mini > On Jun 30, 2014, at 0:48, Rolf Turner <r.tur...@auckland.ac.nz> wrote: > > >> On 30/06/14 10:32, Dr Eberhard W Lisse wrote: >> >> Thanks, >> >> I then set NA to 0, and can do the sutraction, >> >> great. > > Not so great. I haven't gone through the issues underlying this post, but > replacing NA by 0 will almost surely yield nonsense. "Missing" is ***not*** > the same thing as "zero". Pretending that it is will have disastrous > consequences. Think through what you are trying to do more clearly. > > cheers, > > Rolf Turner ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
