Get the labels of each interior node
get_nodes_to_expand_info(hc, dc)hclust object
a vector of length n with integers between 0 and num_clusters such as is outputted by dynamicTreeCut::cutreeDynamicTree
Returns an (n-1)-vector giving the labels of each interior node. A positive value means that all nodes in that node's subtree have that label. A value of -1 means that this node's children have different labels. A value of -2 means that at least one child has a value of -1. And so forth.