[R-sig-phylo] diversification rates with two traits present simultaneously

2018-06-18 Thread Elizabeth Christina Miller
Hello, I am wondering what comparative method(s) is appropriate for testing if diversification rates are highest when two traits are present together, rather than one alone? Specifically, if I have two binary traits, let's say freshwater/marine and temperate/tropical, what is the best way to test

Re: [R-sig-phylo] diversification rates with two traits present simultaneously

2018-06-18 Thread William Gearty
I'm not sure of any particular methods that do this, but one preliminary approach that you could try is combining the two traits into a single trait (00, 01, 10, and 11) which you could then analyze with any of the standard methods. You could then look for whether any of the states have higher or l

Re: [R-sig-phylo] diversification rates with two traits present simultaneously

2018-06-18 Thread Gilles Benjamin Leduc
Hello, Personally, I would advise you not to use a tree, for your 2 traits times 2 (+/-) makes 4 combinations, meaning a tree that is dichotomic cannot reveal anything! Can you quantify your "diversification" without "rate"? How do you obtain your "diversification rates"? If it is something