#' @title Plot figures with the mean or proportion of the covariates for every split.
#'
#' @param explTree A Latent Class Tree to which the 3-step method is applied (with the function \code{exploreTree}).
#'
#' @description Several figures with the mean or proportion of the covariates for every split.
#'
#'@export
plotLCTexpl = function(explTree,
ylab="",
ylab2 = "",
beside = FALSE, ...){
splitSize = sapply(1:length(explTree$splitInfo), function(i){length(explTree$splitInfo[[i]]$ClassProb)})
mLevels = explTree$varInfo$mLevels
sizeMlevels = explTree$varInfo$sizeMlevels
parentClasses = names(explTree$splitInfo)
for(idxSplits in 1:length(explTree$splitInfo)){
evSplit = explTree$splitInfo[[idxSplits]]$EV
childClasses = paste0(parentClasses[idxSplits], 1:splitSize[idxSplits])
for(idxVar in 1:length(evSplit)){
if(idxVar != 1){par(new = TRUE)}
ev = evSplit[[idxVar]]
if(mLevels[idxVar] == "ordinal"){
bm = barplot(matrix(
unlist(ev),nrow = sizeMlevels[idxVar]),
beside = beside, col = rainbow(sizeMlevels[idxVar]), ylim = c(0,1),
names.arg = substr(childClasses, 2, nchar(childClasses)), las = 1, ylab = ylab)
}
if(mLevels[idxVar] == "continuous"){
allEV = sapply(explTree$splitInfo, function(x) {x$EV[[idxVar]]})
rEV = range(allEV)
difRev = 0.1 * diff(rEV)
ylimcont = c(rEV[1] - difRev, rEV[2] + difRev)
plot(1:splitSize[idxSplits], ev,
xlim = c(0, splitSize[idxSplits] + 1), ylim = ylimcont,
axes= FALSE, type = "b", bty = "n", xlab = "Classes", ylab = "")
axis(4, las = 2)
mtext(ylab2, side = 4, line = 3, cex = 2)
}
}
}
}
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