[Rd] xyTable(x,y) versus table(x,y) with NAs
Viechtbauer Wolfgang (SP)
wolfgang.viechtbauer at maastrichtuniversity.nl
Thu Dec 14 21:05:27 CET 2017
I asked this over at r-help, but didn't get any responses. As this seems like a bug (or at least undocumented behavior) to me, I'll try again here.
It seems to me that xyTable() gets thrown off by NAs:
x <- c(1, 1, 2, 2, 2, 3)
y <- c(1, 2, 1, 3, NA, 3)
table(x, y, useNA="always")
Is this intended behavior?
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