Extract variance covariance matrix of the estimated parameters from acre models — vcov.acre • acre

Extract variance covariance matrix of the estimated parameters from acre models

Usage

# S3 method for class 'acre'
vcov(
  object,
  types = NULL,
  pars = NULL,
  new.covariates = NULL,
  show_fixed_par = TRUE,
  ...
)

Arguments

object: a fitted model from fit.acre().
types: a character vector, the same as "coef.acre()".
pars: a character vector, the same as "coef.acre()".
new.covariates: a data frame, the same as "coef.acre()".
show_fixed_par: a logical value. To control whether to include the fixed parameters in the covariance matrix. It is TRUE by default.
...: For S3 compatibility.

Value

a list with matrices as its elements if multiple 'types'. a matrix if only one 'types'.