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)]
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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