Transforms a tree and fossils dataframe to a combined SA tree. Sampled ancestors are represented as tips on zero-length edges to maintain compatibility with the ape format. Tip labels are set to "species id"_"index", where the most recent tip of a given species receives index 1 and indices increase towards the past.
A list of 'tree', the SA tree integrating the fossils, and 'fossils', the fossils object updated with the tip label of each sample.
# simulate tree t = ape::rtree(6) # simulate fossils f = sim.fossils.poisson(rate = 2, tree = t) # transform format t2 = SAtree.from.fossils(t,f) plot(t2$tree)
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