Nothing
sanitize_vcov <- function(model, vcov) {
# TRUE generates a warning in `insight::get_varcov` for some models
if (isTRUE(checkmate::check_flag(vcov))) {
return(NULL)
}
# no vcov matrix for bayesian models
if (inherits(model, c("brmsfit", "stanreg"))) {
return(NULL)
}
# strings should be case-insensitive
vcov_strings <- c("stata", "robust", "HC", "HC0", "HC1", "HC2", "HC3",
"HC4", "HC4m", "HC5", "HAC", "NeweyWest", "kernHAC", "OPG",
"satterthwaite", "kenward-roger")
if (isTRUE(checkmate::check_choice(hush(tolower(vcov)), choices = tolower(vcov_strings)))) {
idx <- match(tolower(vcov), tolower(vcov_strings))
return(vcov_strings[idx])
}
checkmate::assert(
checkmate::check_null(vcov),
checkmate::check_function(vcov),
checkmate::check_matrix(vcov),
checkmate::check_formula(vcov),
checkmate::check_choice(vcov, choices = vcov_strings))
out <- vcov
if (isTRUE(checkmate::check_function(out))) {
out <- hush(out(model))
}
if (isTRUE(checkmate::check_matrix(out))) {
if (ncol(out) != nrow(out)) {
stop("The `vcov` matrix must be square.", call. = FALSE)
}
}
return(out)
}
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