cluster analysis - Clara() output object and within sum of square

Question

My goal is to find the optimal cluster number for my Clara results.

I am trying to plot an elbow graph with fviz_nbclust(method = "wss"), But I don't want the graph to start with 1, instead, I would like it to discard cluster = 1 and begin with cluster=2.

I struggle to understand the output of Clara() function, what is the output object that contributes to the Clara elbow graph (what is the code to find the within sum of square).

Here is a link to all Clara output

Answer 1

等待大神答复