Hi Edwin,
That is a bug - I've fixed it in the developmental version on R-forge but
haven't yet rolled out a new version to CRAN. Many thanks for reporting it!
Phylogenetic independent contrasts, where comparisons need to be made between
pairs of branches, require methods adjustments for
Hello everybody.
I have some questions for you.
When performing a phylogenetic regression between two continuous traits,
the dependent trait clearly divides my data set in two distinct
morphologies. This division overlaps with what I previously thought were
two different ecomorphs. The
Hi Renata.
I agree with Ted - you should be able to fit an ANCOVA model with
gls(y~x+ecomorph,...,correlation=corBrownian(phy=tree)), or something
like this, where ecomorph is a factor.
Alternatively, you could use the method we devised in Revell Collar
(2009; Evolution) in which we first
