Nothing
trun.d <-function(par, family = "NO", type = c("left", "right", "both"), ...)
{
type <- match.arg(type)
if (type=="both" && length(par)!= 2) stop(paste("the length of par should be 2 \n"))
if (type!="both" && length(par)!= 1) stop(paste("the length of par should be 1 \n"))
fname <- family
if (mode(family) != "character" && mode(family) != "name")
fname <- as.character(substitute(family))
distype <- eval(call(family))$type
dfun <- paste("d",fname,sep="")
pfun <- paste("p",fname,sep="")
pdf <- eval(parse(text=dfun))
cdf <- eval(parse(text=pfun))
fun <- if (type=="left")
function(x, log = FALSE, ...)
{
if (distype=="Discrete" && any(x <= par))
stop(paste("x must be greater than ", par, "\n", ""))
if (distype!="Discrete" && any(x < par))
stop(paste("x must be greater or equal than ", par, "\n", ""))
dfun <- pdf(x,log = TRUE,...)-log(1-cdf(par,...))
dfun <- if (log == TRUE) dfun else exp(dfun)
dfun
}
else if (type=="right")
function(x, log = FALSE, ...)
{
if (distype=="Discrete" && any(x >= par))
stop(paste("x must be less than ", par, "\n", ""))
if (distype!="Discrete" && any(x > par))
stop(paste("x must be less or equal than ", par, "\n", ""))
dfun <- if (distype=="Discrete") pdf(x, log = TRUE,...)-log(cdf(par-1,...))
else pdf(x, log = TRUE,...)-log(cdf(par,...))
dfun <- if (log == TRUE) dfun else exp(dfun)
dfun
}
else if (type=="both")
function(x, log = FALSE, ...)
{
if (distype=="Discrete" && (any(x <= par[1]) || any(x >= par[2])) )
stop(paste("x must be greater than", par[1], "and less than", par[2],
"\n", ""))
if (distype!="Discrete" && (any(x < par[1]) || any(x > par[2])) )
stop(paste("x must be greater than", par[1], "and less or equal to", par[2],
"\n", ""))
dfun <- if (distype=="Discrete") pdf(x, log = TRUE,...) - log(cdf(par[2]-1,...)-cdf(par[1],...))
else pdf(x, log = TRUE,...) - log(cdf(par[2],...)-cdf(par[1],...))
#pdf(x, log = TRUE,...) - log(cdf(par[2],...)-cdf(par[1],...))
dfun <- if (log == TRUE) dfun else exp(dfun)
dfun
}
# formals(fun) <- formals(dfun)
#environment(fun) <- .GlobalEnv # it is not working since it can not find par
fun
}
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