Casting factor() upon a (character) vector usually results in
alphabetically ordered factor levels. Although this seems reasonable in most
cases, the automated ordering of factor levels is seldomly desirable in the
context of visualization, e.g. when working with tiled lattice or
ggplot2 figures. This function returns a factor with levels ordered
according to their first appearance in the supplied vector.
Usage
unsortedFactor(x, ...)
Arguments
x
A character vector with elements to converted to factor.