Group tips according to distance from the root

Group tips according to distance from the root

groupByRootDist(tree, nGroups = 15, rootTipDists = NULL)

Arguments

tree	a phylo object
nGroups	integer, the desired number of groups (default 15)
rootTipDists	numeric vector of root to tip distances in the order of tree$tip.label. If not passed, this vector is calculated by the function nodeTimes().