| To: | s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | comparing NA values |
| From: | Dave Evens <devens8765@yahoo.com> |
| Date: | Tue, 14 Jun 2005 03:24:43 -0700 (PDT) |
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Is it possible to make comparisons between numeric NAs and other numeric values? For example, if I have two vectors > x<-c(1:10,1:10,rep(NA,20)) > y<-c(1:30,rep(NA,10)) I want to compare them > x==y [1] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE NA NA NA NA NA [26] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA What I would like is to have TRUE for the first 10, FALSE for the next 20, and NA for the last 10. Is this possible? Thanks in advance for any help. Dave __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com |
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