fct_unique | R Documentation |
fct_unique()
extracts the complete set of possible values from the
levels of the factor, rather than looking at the actual values, like
unique()
.
fct_unique()
only uses the values of f
in one way: it looks for
implicit missing values so that they can be included in the result.
fct_unique(f)
f |
A factor. |
A factor.
f <- fct(letters[rpois(100, 10)])
unique(f) # in order of appearance
fct_unique(f) # in order of levels
f <- fct(letters[rpois(100, 2)], letters[1:20])
unique(f) # levels that appear in data
fct_unique(f) # all possible levels
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