Re: [R-sig-phylo] lambda meaning on several traits

2013-08-09 Thread Adrián Arellano Davín
Ok, I did not have clear that Lambda is calculated over the residuals values of the correlation... Thank you very much for the links you sent me, they will be very useful Cheers Adrian 2013/8/8 Alejandro Gonzalez > Hola Adrián, > > Here is my grain of sand. The lambda parameter you estimate

Re: [R-sig-phylo] lambda meaning on several traits

2013-08-08 Thread Alejandro Gonzalez
Hola Adrián, Here is my grain of sand. The lambda parameter you estimate gives you an idea of the evolutionary co-variance between all the traits included in the model, its the same interpretation as for the single trait, but in the case of multiple traits it provides information on the evoluti

[R-sig-phylo] lambda meaning on several traits

2013-08-08 Thread Adrián Arellano Davín
Hi all, First of all, I am very much a newbie in phylogenetics, so the question I will ask may be a bit naïve. Here it is: I want to correlate some phenotypic traits of several species of animals. Let's say, body mass and brain size. To account for the non-independence of the points, I must use