est_ini function for initial estimation
est_ini(
X,
Y,
quant = NA,
method = c("ols", "quantile", "mean", "logistic", "poisson")
)initial estimator
Array or data.frame containing covariates
Array or data.frame of outcomes
quantile for quantile estimation
indicates the method to be used for M-estimation. Options include "mean", "quantile", "ols", "logistic", and "poisson".