I have data frame with some numerical
variables and some categorical factor
variables. The order of
levels for those factors is not the way I want them to be.
numbers <-
1:4
letters <- factor(c("a", "b", "c", "d"))
df <-
data.frame(numbers, letters)
df
# numbers letters
# 1 1
a
# 2 2 b
# 3 3 c
# 4 4
d
If I
change the order of the levels, the letters no longer are with their corresponding
numbers (my data is total nonsense from this point
on).
levels(df$letters) <-
c("d", "c", "b", "a")
df
# numbers letters
# 1 1
d
# 2 2 c
# 3 3 b
# 4 4
a
I simply
want to change the level order, so when plotting, the bars are
shown in the desired order - which may differ from default alphabetical
order.
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