On Dec 9, 2013, at 3:59 PM, Ross Boylan wrote: > Can anyone recommend a good way to add tables? > Ideally I would like > t1 <- table(x1) > t2 <- table(x2) > t1+t2 > > It t1 and t2 have the same levels this works fine, but I need something > that will work even if they differ, e.g., >> t1 > > 1 2 4 5 > 2 1 1 1 >> t2 <- table(c(10, 11, 12, 13)) >> t1+t2 # apparently does simple vector addition > > 1 2 4 5 > 3 2 2 2 > whereas I want > 1 2 4 5 10 11 12 13 > 2 1 1 1 1 1 1 1
R contingency tables are really matrices, so the `cbind` matrix-method appears to be what you want: cbind(t1,t2) > David Winsemius Alameda, CA, USA ______________________________________________ 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.
