This function gets the states from the nodes or tips of a mapped tree (e.g., make.simmap).
getStates(tree, type=c("nodes","tips"))is a modified object of class "phylo" or "multiPhylo".
mode indicating whether to get states at the nodes (type="nodes") or the tips (type="tips") of the tree.
A named vector (for "phylo") or matrix (for "multiPhylo").
Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.