Nothing
boot.mple <- function(mple.out, n = 100, conf.level = 0.95, se = TRUE,
trace = FALSE) {
prog <- trace
if (prog){
pb <- txtProgressBar(min = 0, max = n, style = 3)
}
rs <- floor(32768 * runif(n))
model <- mple.out$input.val$model
pars <- mple.out$mple
npar <- length(pars)
boot.mples <- matrix(0, nrow = n, ncol = npar)
colnames(boot.mples) <- names(pars)
for (i in 1:n) {
xy.points <- sim.cppm(model, pars, seed = rs[i])$offspring$xy
np <- dim(xy.points)[1]
init.pars <- set.pars(model, xy.points)
names(init.pars) <- names(pars)
result <- mple.cppm(model, xy.points, init.pars, mple.out$input.val$eps,
mple.out$input.val$uplimit, mple.out$input.val$skip)
boot.mples[i, ] <- result$mple
if (prog){
setTxtProgressBar(pb, i)
}
}
if (prog)
cat("\n\n")
prb1 <- (1 - conf.level) / 2
prb2 <- (1 + conf.level) / 2
interval <- t(apply(boot.mples, 2, quantile, probs = c(prb1, prb2),
na.rm = TRUE))
conf <- matrix(0, nrow = npar, ncol = 2)
rownames(conf) <- names(pars)
colnames(conf) <- c(paste(100 * prb1, "%"), paste(100 * prb2, "%"))
conf <- interval
if (se == TRUE) {
n <- dim(boot.mples)[1]
sd.mples <- apply(boot.mples, 2, sd)
std.err <- sd.mples / sqrt(n)
conf <- cbind(conf, std.err)
}
out <- list(mple = pars, boot.mples = boot.mples, confint = conf)
class(out) <- "boot.mple"
out
}
summary.boot.mple <- function(object, ...) {
pars <- object$mple
conf <- cbind(pars, object$confint)
colnames(conf)[1] <- "MPLE"
coef(list(coefficients = conf))
}
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