Re: [R-sig-phylo] size-free morphometrics in phylogenetic framework

2009-04-06 Thread Grenyer, Richard
It's been a while since I had to think about this, but when I did last have to this was a justification I used for what I think is pretty much the same as your viewpoint: http://www.ncbi.nlm.nih.gov/pubmed/8246516 Rich _ Rich Grenyer,

Re: [R-sig-phylo] size-free morphometrics in phylogenetic framework

2009-04-06 Thread Liam J. Revell
Hi Dan, Even though this is well-trodden ground in some respects (by the likes of TG and others), I have often-enough fielded questions about size-correction and principal components analysis on species data (or encountered those who see nothing wrong with ignoring phylogeny in said