Answering myself... On Mon, 2013-12-09 at 15:59 -0800, Ross Boylan wrote: > Can anyone recommend a good way to add tables? For count data, which were my main concern, it looks as if tabulate with nbins will work. I'm not sure how this works with a cross-classifying factor, which I will also need. It's possible the factor may have missing values in some tabulations as well.
For the one dimensional case > t1 <- tabulate(c(1, 2, 2, 4), nbins=5) > t2 <- tabulate(c(2, 3, 5), nbins=5) > t1 [1] 1 2 0 1 0 > t2 [1] 0 1 1 0 1 > t1+t2 [1] 1 3 1 1 1 > 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-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.
