Sandbox/Old object possibilities/bickeldocksum.formula.R

In akreutzmann/trafo: Estimation, Comparison and Selection of Transformations

#' #' Bickel-Doksum Formula
#' #'
#' #' Bickel-Doksum estimation
#' #' @param formula object of type formula with the model to transform
#' #' @param data an optional data frame containing the variables in the model 
#' #' @param \dots additional arguments to be passed to the estimation function;  see bickeldoksumEst()
#' #' @return an object of class \code{transformation}; see bickeldoksumEst()
#' #' @keywords internal
#' #' @export
#' bickeldoksum.formula <- function(formula, data = list(),...){
#'   model_frame <- model.frame(formula = formula, data = data)
#'   if (is.null(y <- model.response(model_frame)))
#'     stop("Dependent variable y must not be empty")
#'   if (is.null(x <- model.matrix(attr(model_frame,"terms"), data = model_frame))) 
#'     stop("Matrix of covariates X must not be empty")
#'   bickeldoksumEst(y, x, ...)
#' }