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sim.logit.net <- function(object, x=NULL, x1=NULL, num=c(1000, 100),
prev = NULL, bootstrap = FALSE, bootfn=NULL,
cond.data = NULL, ...) {
if (!is.null(x))
x <- as.matrix(x)
if (!is.null(x1))
x1 <- as.matrix(x1)
if (any(class(object) == "MCMCZelig"))
num <- nrow(object$coefficients)
else if (length(num) == 2) {
if (!bootstrap)
num <- num[1]
else
num <- num[2]
}
if (is.null(prev)) {
if (any(class(object) == "relogit"))
simpar <- param.netglm(object, num=num, x=x, bootstrap=bootstrap)
else if (!bootstrap)
simpar <- param.netglm(object, num=num, bootstrap=bootstrap)
else {
tt <- terms(object)
dta <- eval(object$data, sys.parent())
dta <- dta[complete.cases(model.frame(tt, dta)),]
if (is.null(bootfn))
bootfn <- bootfn.default
res <- boot(dta, bootfn, R = num, object = object, ...)
colnames(res$t) <- names(res$t0)
simpar <- res$t
}
}
else {
if (bootstrap)
stop("Error: Choosing 'bootstrap = TRUE' generates new parameters. \nIf you wish to use previously generated parameters, \nplease specify only 'prev'.")
else
simpar <- prev
}
simqi <- qi.netglm(object, simpar = simpar, x = x, x1 = x1, y = NULL)
c <- match.call()
c[[1]] <- as.name("sim")
c$num <- num
res <- list(x=x, x1=x1, call = c, zelig.call = object$call,
par = simpar, qi=simqi$qi, qi.name=simqi$qi.name)
class(res) <- "zelig"
res
}
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