Build a factor using the order of input character strings
Arguments
- x
A vector of character strings
- ...
Other parameters passed to factor
Value
Factor with levels in the same order of the input strings.
Author
Jitao David Zhang <jitao_david.zhang@roche.com>
Examples
testStrings <- c("A", "C", "B", "B", "C")
(testFac <- factor(testStrings))
#> [1] A C B B C
#> Levels: A B C
(testOfac <- ofactor(testStrings))
#> [1] A C B B C
#> Levels: A C B
stopifnot(identical(levels(testOfac), c("A", "C", "B")))