hadley wickham wrote:
a <- data.frame(b = rep(1:5, each=2), c=factor(rep("a",10), levels=c("a","b"))) levels(subset(a, b=1, drop=T)$c) # [1] "a" "b"
Is this a bug?
Also, I think you meant:
levels(subset(a, b==1, drop=T)$c)
(Note the double-equals for logical equality)
--sundar
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