All,
When I take a subset of a factor the reduced factor still maintains all
the original levels of the factor when say forming the key in a plot.
The data is correct, but the variable still "remembers" the original
levels. See below for reproducible code. Does anyone know how to fix
this?
cheers,
dave
fact = as.factor(c(rep("A", 3),rep("B", 3), rep("C", 3)))
new.fact = fact[1:6]
> new.fact
[1] A A A B B B
Levels: A B C ## should only show A B
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