This function returns the index we want to maximize on the set of potential clusters, for each potential cluster
dfree_index_multi(data, matrix_clusters)
numeric vector.
List. List of the data, each element of the list corresponds to a site (or an individual), for each element each row corresponds to a variable and each column represents an observation time.
numeric matrix. Matrix in which each column represents a potential cluster. It is the result of the "clusters" function.