[R-sig-phylo] a question about pic function(ape package)

dear all, I have a question when I used the pic funtion, it appeared an error:'phy' is not rooted and fully dichotomous, I don't understand what's the problem, the attached file is my phylogenetic information, please check it, I am sorry to trouble you all, but I really want to solve this

Re: [R-sig-phylo] a question about pic function(ape package)

Hi. This is because your tree is not fully dichotomous. tree-read.nexus(file=tree.nex) is.binary.tree(tree) [1] FALSE You can resolve multifurcations with branches of zero length using multi2di(), e.g.: tree-multi2di(tree) is.binary.tree(tree) [1] TRUE Hope this helps. - Liam -- Liam