#' AnĂ¡lisis de componentes principales.
#' @title AnĂ¡lisis de componentes principales
#' @name acp
#' @param base base de datos
#' @param v conjunto de variables
#' @export
#'
acp<-function (base,v){
valida(base,v)
b<-base[,v]
chk_num(b,v)
b1<-b
for(r in 1:dim(as.array(v))){
b1[,r]<-b[,r]-mean(b[,r])
}
cov_m<-cov(b, use="complete.obs")
eig_m<-eigen(cov_m)
eig<-data.matrix(eig_m$vectors)
b2<-data.matrix(b1)
res1<-b2 %*% eig
res2<-eig
assign("CFactorial",res1,envir = .GlobalEnv)
assign("Ponderadores",res2,envir = .GlobalEnv)
message("Se generaron correctamente la carga factorial y ponderadores (Eigenvalores)")
}
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