Dear phylofolks,
I'm trying to root a tree on an internal (rather than a terminal) branch.
Here is a small example:
library(ape)
t5 <- rmtree(N = 1, n = 5, rooted = FALSE)[[1]]
root(t5, node = 6, resolve.root = TRUE)
output: Error in if (i != N) { : argument is of length zero
root(t5, node = 7, resolve.root = TRUE)
output: Phylogenetic tree with 5 tips and 4 internal nodes.
Tip labels:
[1] "t4" "t3" "t2" "t5" "t1"
Rooted; includes branch lengths.
I don't understand why rooting at node 6 throws an error, while using node
7 is fine. What am I missing?
Cheers,
Luiz
--
Luiz Max Fagundes de Carvalho
PhD student, Institute of Evolutionary Biology, School of Biological
Sciences,
Ashworth Laboratories, Ash 2, office 123
University of Edinburgh, United Kingdom.
http://br.linkedin.com/pub/luiz-max-carvalho/49/687/283
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