[R-sig-phylo] PIC or PGLS for genome-wide SNP screening

2012-05-23 Thread Mattia Prosperi
Dear all, I am working on a data set composed of bacterial genomic sequences (a few genes) associated to phenotypic values (in-vitro resistance to antibiotics, a numerical value discretised into a binary class). Of note, the bacterial isolates were sampled non-uniformly at different times and

Re: [R-sig-phylo] pairwise comparisons of 100s of gene tree topologies

2014-04-14 Thread Mattia Prosperi
You may use dist.topo from the ape package, there are a couple of tree distance functions implemented. 2014-04-14 13:13 GMT+01:00 Chris Buddenhagen cbuddenha...@gmail.com: I would like to make pairwise comparisons of topological similarity between all possible combinations of 518 gene trees.

[R-sig-phylo] 'phylogenetic signal' of a tree independently from a character

2014-05-10 Thread Mattia Prosperi
Hi all, I know there's plenty of methods (many already available in R) to evaluate phylogenetic signal of a tree with respect to a character. But I have found the term 'phylogenetic signal' also in the context of a sole alignment/tree without the presence of associated characters. For instance, a