https://github.com/cran/emplik
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Tip revision: e0c87611101332336f61f0dcb7062c3a309fa130 authored by Mai Zhou on 11 October 2013, 00:00:00 UTC
version 0.9-9
Tip revision: e0c8761
findUL.R
findUL <- function (step = 0.01, initStep = 0, fun, MLE, level = 3.84, 
    ...) 
{
    value <- 0
    step1 <- step
    Lbeta <- MLE - initStep
    for (i in 1:8) {
        while (value < level) {
            Lbeta <- Lbeta - step1
            value <- fun(theta = Lbeta, ...)$"-2LLR"
        }
        Lbeta <- Lbeta + step1
        step1 <- step1/10
        value <- fun(theta = Lbeta, ...)$"-2LLR"
    }
    value1 <- value
    value <- 0
    Ubeta <- MLE + initStep
    for (i in 1:8) {
        while (value < level) {
            Ubeta <- Ubeta + step
            value <- fun(theta = Ubeta, ...)$"-2LLR"
        }
        Ubeta <- Ubeta - step
        step <- step/10
        value <- fun(theta = Ubeta, ...)$"-2LLR"
    }
	if ( (value1>level)|(value>level) ) warning("Something wrong. Check the MLE and step inputs.")
    return(list(Low = Lbeta, Up = Ubeta, FstepL = step1, FstepU = step, 
        Lvalue = value1, Uvalue = value))
}
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