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#' @title Weights of the external variables, or additional mode, on the latent component in each cluster.
#'
#' @description To get the weigths associated with each cluster.
#' For CLV(_kmeans) or LCLV, applies only when external variables (Xr, Xu or both) are involved.
#' For CLV3W(_kmeans), the weights are associated with the third mode of the 3-way array.
#'
#' @param resclv : result of CLV(), CLV_kmeans() or LCLV(), CLV3W() or CLV3W_kmeans()
#' @param K : the number of clusters chosen (already defined if CLV_kmeans or CLV3W_kmeans is used)
#' @param graph : boolean, if TRUE, the barplot associated with the scores is displayed (default : graph=FALSE)
#' @param cex.lab : magnification to be used for labels (1 by default)
#'
#' @return \item{weight}{Weights in each cluster (associated with mode 3 for CLV3W object) \cr
#' For each cluster, the vector of weights is set to length 1 \cr
#' output provided as matrix with K columns (K: number of clusters) \cr
#' In the special case of LCLV, two matrices of weights are defined : \cr
#' weight_v : weights of the external Xr variables, \cr
#' weight_u : weights of the external Xu variables.
#' }
#'
#' @export
#'
get_weight <- function(resclv, K=NULL,graph=FALSE,cex.lab=1)
{
if (!inherits(resclv, c("clv","lclv","clv3w"))) stop("non convenient objects")
# for object clv
if(inherits(resclv,c("clv","lclv"))) {
if(is.null(resclv$param$K)) {
if (is.null(K)) {K<- as.numeric(readline("Please, give the number of groups : "))}
}
weight=get_weight.clv(resclv,K,graph=graph,cex.lab=cex.lab)
}
# for object clv3w
if(inherits(resclv,"clv3w")) {
appel <- as.list(resclv$call)
if(is.null(eval.parent(appel$K))) {
if (is.null(K)) {K<- as.numeric(readline("Please, give the number of groups : "))}
}
weight=get_weight.clv3w(resclv,K,graph=graph,cex.lab=cex.lab)
}
return(weight=weight)
}
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