[R-sig-phylo] R-squared alternative for gls

2015-07-20 Thread Sergio Ferreira Cardoso
Hello members, I'm creating relative values os semicircular canal size by fitting a PGLS and extracting residuals (using phyl.resid). I've heard that R-squared isn't meaningful in gls models. What I'm trying to do is to know is which of the two independent variables is best and on a lm () model I

Re: [R-sig-phylo] Different Lambda estimations

2015-07-20 Thread Sergio Ferreira Cardoso
Hi Emmanuel, Thanks for your answer. So that means I can still use that Lambda estimated value, I suppose. In the case of Lambda1, it then means that species are more similar than expected, right? Best regards, Sérgio. 2015-07-17 15:57 GMT+01:00 Emmanuel Paradis emmanuel.para...@ird.fr: Hi

Re: [R-sig-phylo] R-squared alternative for gls

2015-07-20 Thread Theodore Garland Jr
It's not that r squared isn't meaningful for generalized least squares but rather that it cannot be compared directly with values from OLS models. Cheers, Ted From: R-sig-phylo [r-sig-phylo-boun...@r-project.org] on behalf of Sergio Ferreira Cardoso [sff.card...@campus.fct.unl.pt] Sent:

Re: [R-sig-phylo] R-squared alternative for gls

2015-07-20 Thread Sergio Ferreira Cardoso
Dear Dr. Garland, Then there is no problem because I just need to compare between phylogenetic models. Thank you. Best regards, Sérgio. 2015-07-20 14:48 GMT+01:00 Theodore Garland Jr theodore.garl...@ucr.edu: It's not that r squared isn't meaningful for generalized least squares but rather