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##
## PURPOSE: Computation of the predictive marginal (univariate) cumulative distribution functions
## * method for objects of class NMixMCMC
##
## AUTHOR: Arnost Komarek (LaTeX: Arno\v{s}t Kom\'arek)
## arnost.komarek[AT]mff.cuni.cz
##
## CREATED: 09/06/2009
## 02/04/2015: code allowing for a factor covariate
## on mixture weights implemented
##
## FUNCTIONS: NMixPredCDFMarg.NMixMCMC (09/06/2009)
##
## ======================================================================
## *************************************************************
## NMixPredCDFMarg.NMixMCMC
## *************************************************************
NMixPredCDFMarg.NMixMCMC <- function(x, grid, lgrid=500, scaled=FALSE, ...)
{
if (scaled) scale <- list(shift=0, scale=1)
else scale <- x$scale
if (x$nx_w == 1){
if (missing(grid)){
grid <- list()
if (scaled){
if (x$dim == 1){
rangeGrid <- x$summ.z.Mean["Median"] + c(-3.5, 3.5)*x$summ.z.SDCorr["Median"]
grid[[1]] <- seq(rangeGrid[1], rangeGrid[2], length=lgrid)
}else{
for (i in 1:x$dim){
rangeGrid <- x$summ.z.Mean["Median", i] + c(-3.5, 3.5)*x$summ.z.SDCorr["Median", (i-1)*(2*x$dim - i + 2)/2 + 1]
grid[[i]] <- seq(rangeGrid[1], rangeGrid[2], length=lgrid)
}
}
}else{
if (x$dim == 1){
rangeGrid <- x$summ.y.Mean["Median"] + c(-3.5, 3.5)*x$summ.y.SDCorr["Median"]
grid[[1]] <- seq(rangeGrid[1], rangeGrid[2], length=lgrid)
}else{
for (i in 1:x$dim){
rangeGrid <- x$summ.y.Mean["Median", i] + c(-3.5, 3.5)*x$summ.y.SDCorr["Median", (i-1)*(2*x$dim - i + 2)/2 + 1]
grid[[i]] <- seq(rangeGrid[1], rangeGrid[2], length=lgrid)
}
}
}
}
if (x$dim == 1) if (is.numeric(grid)) grid <- list(x1=grid)
if (!is.list(grid)) stop("grid must be a list")
names(grid) <- paste("x", 1:x$dim, sep="")
if (x$prior$priorK == "fixed"){
cdfm <- NMixPredCDFMarg.default(x=grid, scale=scale, K=x$K, w=as.numeric(t(x$w)), mu=as.numeric(t(x$mu)), Li=as.numeric(t(x$Li)), Krandom=FALSE)
}else{
cdfm <- NMixPredCDFMarg.default(x=grid, scale=scale, K=x$K, w=x$w, mu=x$mu, Li=x$Li, Krandom=TRUE)
}
cdfm$nx_w <- 1
cdfm$lx_w <- ""
return(cdfm)
}
else{
if (x$prior$priorK != "fixed") stop("only implemented for models with fixed number of components")
if (missing(grid)){
grid <- list()
if (scaled){
for (ixw in 1:x$nx_w){
for (i in 1:x$dim){
naamM <- paste("z.Mean.", i, "-", x$lx_w[ixw], sep = "")
naamS <- paste("z.SD.", i, "-", x$lx_w[ixw], sep = "")
rangeGrid <- x$summ.z.Mean["Median", naamM] + c(-3.5, 3.5) * x$summ.z.SDCorr["Median", naamS]
grid[[(ixw - 1)*x$dim + i]] <- seq(rangeGrid[1], rangeGrid[2], length = lgrid)
}
}
}else{
for (ixw in 1:x$nx_w){
for (i in 1:x$dim){
naamM <- paste("y.Mean.", i, "-", x$lx_w[ixw], sep = "")
naamS <- paste("y.SD.", i, "-", x$lx_w[ixw], sep = "")
rangeGrid <- x$summ.y.Mean["Median", naamM] + c(-3.5, 3.5) * x$summ.y.SDCorr["Median", naamS]
grid[[(ixw - 1)*x$dim + i]] <- seq(rangeGrid[1], rangeGrid[2], length = lgrid)
}
}
}
}
if (!is.list(grid)) stop("grid must be a list")
names(grid) <- paste("x", rep(1:x$dim, x$nx_w), "-", rep(x$lx_w, each = x$dim), sep="")
cdfm <- list(x = grid)
for (ixw in 1:x$nx_w){
gridixw <- list()
for (i in 1:x$dim){
gridixw[[i]] <- grid[[(ixw - 1)*x$dim + i]]
}
names(gridixw) <- paste("x", 1:x$dim, sep = "")
tmp <- NMixPredCDFMarg.default(x = gridixw, scale = scale, K = x$K, w = as.numeric(t(x$w[, (ixw - 1)*x$K[1] + 1:x$K[1]])), mu = as.numeric(t(x$mu)), Li = as.numeric(t(x$Li)), Krandom = FALSE)
if (ixw == 1){
cdfm$cdf <- tmp$cdf
}else{
for (i in 1:x$dim) cdfm$cdf[[(ixw - 1) * x$dim + i]] <- tmp$cdf[[i]]
}
}
names(cdfm$cdf) <- paste(rep(1:x$dim, x$nx_w), "-", rep(x$lx_w, each = x$dim), sep="")
cdfm$nx_w <- x$nx_w
cdfm$lx_w <- x$lx_w
class(cdfm) <- "NMixPredCDFMarg"
return(cdfm)
}
}
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