Nothing
mice.impute.myfunc <- function (y, ry, x, wy = NULL, ...)
{
if (is.null(wy))
wy <- !ry
aug <- augment(y, ry, x, wy)
x <- aug$x
y <- aug$y
ry <- aug$ry
wy <- aug$wy
w <- aug$w
x <- cbind(1, as.matrix(x))
expr <- expression(glm.fit(x = x[ry, , drop = FALSE], y = y[ry],
family = quasibinomial(link = logit), weights = w[ry],
control = list(maxit=1000)))
fit <- eval(expr)
fit.sum <- summary.glm(fit)
beta <- coef(fit)
rv <- t(chol(sym(fit.sum$cov.unscaled)))
beta.star <- beta + rv %*% rnorm(ncol(rv))
p <- 1/(1 + exp(-(x[wy, , drop = FALSE] %*% beta.star)))
vec <- (runif(nrow(p)) <= p)
vec[vec] <- 1
if (is.factor(y)) {
vec <- factor(vec, c(0, 1), levels(y))
}
return(vec)
}
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