Duncan Murdoch wrote:
Is this expected behaviour?x <- factor(c("c", "b", "a","c")) results <- c(c=4, b=5) results[x] giving > results[x] <NA> b c <NA> NA 5 4 NA (i.e. it appears to give results[levels(x)]
Thanks to all for pointing out my misinterpretation. It's clearly not a bug.
Duncan Murdoch
whereas results[as.character(x)] does what I expected: as.character(x) results[as.character(x)] > as.character(x) [1] "c" "b" "a" "c" > results[as.character(x)] c b <NA> c 4 5 NA 4 Duncan Murdoch
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