R/distance2mahalanobis.R

In DanRunfola/SimTests: MatchIt: Nonparametric Preprocessing for Parametric Casual Inference

distance2mahalanobis <- function(formula, data, ...) {
  X <- model.matrix(formula, data)

  # Placeholder where real work is done on a unit by unit basis
  distance <- rep(1, nrow(X))
  return(list(model = NULL, distance = distance))
}