R/fbind.R

In molliejmcdowell/foofactors: Make Factors Less Annoying

#' Bind two factors together
#'
#' @param a factor
#' @param b factor
#'
#' @return factor
#' @export
#' @examples
#' fbind(iris$Species[c(1, 51, 101)], PlantGrowth$group[c(1, 11, 21)])
fbind <- function(a, b) {
  stopifnot(is.factor(a))
  stopifnot(is.factor(b))
  factor(c(as.character(a), as.character(b)))
}