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I often need a factor with levels the unique values of a character vector (for example: to prevent ggplot2 from sorting the character vector).
char2factor(x, levels = unique(x))
A factor.
A character vector.
The levels to use, see factor.
factor
Other vector functions: escape_non_ascii(), file_string(), powers_of_ten
escape_non_ascii()
file_string()
powers_of_ten
x <- c("beech", "oak", "spruce", "fir") char2factor(x)
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