1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#' @rdname set_coef
#' @export
set_coef.scam <- function(model, coefs, ...) {
# in basic model classes coefficients are named vector
model[["coefficients.t"]][names(coefs)] <- coefs
model
}
#' @rdname get_coef
#' @export
get_coef.scam <- function(model, ...) {
model$coefficients.t
}
#' @rdname get_vcov
#' @export
get_vcov.scam <- function(model, vcov = NULL, ...) {
if (isTRUE(checkmate::check_matrix(vcov))) {
return(vcov)
}
vcov <- sanitize_vcov(model, vcov)
# email from developer Natalya Pya
# "one of the elements of the returned 'scam' object is 'Vp.t' which is an
# estimated covariance matrix for the reparametrized parameters,
# 'model$coefficients.t'."
if (!is.null(vcov) && !is.logical(vcov)) {
stop(
"The `vcov` argument is not supported for models of class `scam`.",
.call = FALSE
)
}
V <- model$Vp.t
b <- model$coefficients.t
if (length(b) != nrow(V)) {
stop(
"The size of the variance-covariance matrix does not match the length of the coefficients vector.",
call. = FALSE
)
}
colnames(V) <- row.names(V) <- names(b)
return(V)
}
|
