This function rounds the branch lengths of a tree or trees and reconciles any mappings for objects of class "simmap" or "multiSimmap".
roundBranches(tree, digits)an object of class "phylo", "multiPhylo", "simmap", or "multiSimmap".
number of digits for rounding. Passed to round.
An object of class "phylo", "multiPhylo", "simmap", or "multiSimmap", with rounded edge lengths.
Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.