R/frev.R

In admisc: Adrian Dusa's Miscellaneous

# Copyright (c) 2019 - 2025, Adrian Dusa
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`frev` <- function(x, labels = FALSE) {
    if (!is.factor(x)) {
        stopError("The variable is not a factor.")
    }
    flist <- list(levels(x), rev(levels(x)))
    return(factor(x, levels = flist[[1 + !labels]], labels = flist[[1 + labels]]))
}
`finvert` <- function(...) {
    .Deprecated(msg = "Function finvert() is deprecated, use frev().\n")
    frev(...)
}