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UnivarMixingDistribution <- function(..., Dlist, mixCoeff,
withSimplify = getdistrOption("simplifyD"))
{
ldots <- list(...)
if(!missing(Dlist)){
Dlist.L <- as(Dlist, "list")
if(!is(try(do.call(UnivarDistrList,args=Dlist.L),silent=TRUE),"try-error"))
ldots <- c(ldots, Dlist.L)
}
l <- length(ldots)
if(l==0) stop ("No components given")
if(l==1) return(ldots[[1]])
mixDistr <- do.call(UnivarDistrList,args=ldots)
ep <- .Machine$double.eps
if(missing(mixCoeff))
mixCoeff <- rep(1,l)/l
else{ if (l!=length(mixCoeff))
stop("argument 'mixCoeff' and the mixing distributions must have the same length")
if(any(mixCoeff < -ep) || sum(mixCoeff)>1+ep)
stop("mixing coefficients are no probabilities")
}
rnew <- .rmixfun(mixDistr = mixDistr, mixCoeff = mixCoeff)
pnew <- .pmixfun(mixDistr = mixDistr, mixCoeff = mixCoeff)
.withArith <- any(as.logical(lapply(mixDistr, function(x) x@".withArith")))
.withSim <- any(as.logical(lapply(mixDistr, function(x) x@".withSim")))
.lowerExact<- all(as.logical(lapply(mixDistr, function(x) x@".lowerExact")))
if (all( as.logical(lapply(mixDistr, function(x) is(x,"AbscontDistribution")))) ||
all( as.logical(lapply(mixDistr, function(x) is(x,"DiscreteDistribution")))))
dnew <- .dmixfun(mixDistr = mixDistr, mixCoeff = mixCoeff)
gaps <- NULL
for(i in 1:l){
if(is.null(gaps)){
try(gaps <- gaps(mixDistr[[i]]), silent=TRUE)
}else{
if(!is(try(gaps0 <- gaps(mixDistr[[i]]), silent=TRUE),"try-error"))
if(!is.null(gaps0)) gaps <- .mergegaps2(gaps,gaps0)
}
}
support <- numeric(0)
for(i in 1:l){
if(!is(try(support0 <- support(mixDistr[[i]]), silent=TRUE),"try-error"))
support <- unique(sort(c(support,support0)))
}
gaps <- .mergegaps(gaps,support)
qnew <- .qmixfun(mixDistr = mixDistr, mixCoeff = mixCoeff,
Cont = TRUE, pnew = pnew, gaps = gaps)
obj <- new("UnivarMixingDistribution", p = pnew, r = rnew, d = NULL, q = qnew,
mixCoeff = mixCoeff, mixDistr = mixDistr, .withSim = .withSim,
.withArith = .withArith,.lowerExact =.lowerExact, gaps = gaps,
support = support)
if (all( as.logical(lapply(mixDistr, function(x) is(x@Symmetry,"SphericalSymmetry"))))){
sc <- SymmCenter(mixDistr[[1]]@Symmetry)
if (all( as.logical(lapply(mixDistr, function(x) .isEqual(SymmCenter(x@Symmetry),sc)))))
obj@Symmetry <- SphericalSymmetry(sc)
}
if (withSimplify)
obj <- simplifyD(obj)
return(obj)
}
setMethod("mixCoeff", "UnivarMixingDistribution", function(object)object@mixCoeff)
setReplaceMethod("mixCoeff", "UnivarMixingDistribution", function(object,value){
object@mixCoeff<- value; object})
setMethod("mixDistr", "UnivarMixingDistribution", function(object)object@mixDistr)
setReplaceMethod("mixDistr", "UnivarMixingDistribution", function(object,value){
object@mixDistr<- value; object})
setMethod("support", "UnivarMixingDistribution", function(object)object@support)
setMethod("gaps", "UnivarMixingDistribution", function(object)object@gaps)
#------------------------------------------------------------------------
# new p.l, q.r methods
#------------------------------------------------------------------------
setMethod("p.l", signature(object = "UnivarMixingDistribution"),
function(object) .pmixfun(mixDistr = mixDistr(object),
mixCoeff = mixCoeff(object),
leftright = "left"))
setMethod("q.r", signature(object = "UnivarMixingDistribution"),
function(object){
if(!is.null(gaps(object))&&length(gaps(object)))
.modifyqgaps(pfun = p(object), qfun = q.l(object),
gaps = gaps(object), leftright = "right")
else
q.l(object)
})
#------------------------------------------------------------------------
# new accessor methods
#------------------------------------------------------------------------
setMethod(".lowerExact", "UnivarMixingDistribution", function(object){
er <- is(try(slot(object, ".lowerExact"), silent = TRUE), "try-error")
if(er){ object0 <- conv2NewVersion(object)
objN <- paste(substitute(object))
warning(gettextf("'%s' was generated in an old version of this class.\n",
objN),
gettextf("'%s' has been converted to the new version",objN),
gettextf(" of this class by a call to 'conv2NewVersion'.\n")
)
eval.parent(substitute(object<-object0))
return(object0@.lowerExact)}
object@.lowerExact})
setMethod(".logExact", "UnivarMixingDistribution", function(object){
er <- is(try(slot(object, ".logExact"), silent = TRUE), "try-error")
if(er){ object0 <- conv2NewVersion(object)
objN <- paste(substitute(object))
warning(gettextf("'%s' was generated in an old version of this class.\n",
objN),
gettextf("'%s' has been converted to the new version",objN),
gettextf(" of this class by a call to 'conv2NewVersion'.\n")
)
eval.parent(substitute(object<-object0))
return(object0@.logExact)}
object@.logExact})
setMethod("Symmetry", "UnivarMixingDistribution", function(object){
er <- is(try(slot(object, "Symmetry"), silent = TRUE), "try-error")
if(er){ object0 <- conv2NewVersion(object)
objN <- paste(substitute(object))
warning(gettextf("'%s' was generated in an old version of this class.\n",
objN),
gettextf("'%s' has been converted to the new version",objN),
gettextf(" of this class by a call to 'conv2NewVersion'.\n")
)
eval.parent(substitute(object<-object0))
return(object0@Symmetry)}
object@Symmetry})
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