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# modified 24 May 2009 by Adam Kramer (original by J. Fox)
# last modified 2011-08-10 by J. Fox
standardized.coefficients <- function(...){
.Deprecated("standardizedCoefficients", package="sem")
standardizedCoefficients(...)
}
standardizedCoefficients <- function(object, ...){
UseMethod("standardizedCoefficients")
}
standardizedCoefficients.sem <- function (object, digits = getOption("digits"), oneheaded = TRUE, twoheaded = TRUE, ...) {
if (!oneheaded && !twoheaded) {
stop("No coefficients requested.")
}
old.digits <- options(digits = digits)
on.exit(options(old.digits))
P <- object$P
A <- object$A
t <- object$t
par <- object$coeff
par.posn <- object$par.posn
IAinv <- solve(diag(nrow(A)) - A)
C <- IAinv %*% P %*% t(IAinv)
ram <- object$ram
par.names <- rep(" ", nrow(ram))
for (i in 1:t) {
which.par <- ram[, 4] == i
ram[which.par, 5] <- par[i]
par.names[which.par] <- names(par)[i]
}
coeff <- ram[, 5]
if (oneheaded) {
one.head <- ram[, 1] == 1
coeff[one.head] <- coeff[one.head] * sqrt(diag(C[ram[one.head,
3], ram[one.head, 3], drop = FALSE])/diag(C[ram[one.head,
2], ram[one.head, 2], drop = FALSE]))
}
if (twoheaded) {
two.head <- ram[, 1] == 2
coeff[two.head] <- coeff[two.head]/sqrt(diag(C[ram[two.head,
3], ram[two.head, 3], drop = FALSE]) * diag(C[ram[two.head,
2], ram[two.head, 2], drop = FALSE]))
}
var.names <- rownames(A)
par.code <- paste(var.names[ram[, 2]], c("<---", "<-->")[ram[,
1]], var.names[ram[, 3]])
coeff <- data.frame(par.names, coeff, par.code)
colnames(coeff) <- c(" ", "Std. Estimate", " ")
if (oneheaded && twoheaded) {
coeff
}
else if (oneheaded) {
coeff[one.head, ]
}
else {
coeff[two.head, ]
}
}
std.coef <- function(...){
.Deprecated("stdCoef", package="sem")
standardizedCoefficients(...)
}
stdCoef <- function (...){
standardizedCoefficients(...)
}
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