How to use dissimilarity matrix with NbClust in R

Question

I have a dissimilarity matrix computed by other R package, TSclust with INT.PER method. I want to use the dissimilarity matrix to retrieve optimal number of clusters from NbClus

Answer 1

Some of the indexes require numerical data.

Therefore, this function cannot be used on your data set, unless you disable these methods/indexes that require coordinates.

Answer 2

I'm trying to use the NbClust package as well. With a dissimilarity matrix, I was only able to run these 5 indexes:

indexes <- c('frey', 'dunn', 'cindex', 'silhouette', 'mcclain')