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
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
Hi Jarrod, hi all,
I am still struggling with that MCMCglmm function:
First, in the course notes I have read that for some reason which should come clearer later on in the text the IJ matrix is used for the prior of the residuals and the random effectsin the multinomial model. Whyespecially
Hi,
The IJ prior (or posterior) implies that the variance in each
probability is constant and that probabilities of different outcomes
are mutually independent, conditional on the constraint that they must
sum to one. To see why, let V be the covariance matrix of
log-contrasts (either at
Tristan,
I ran into that problem when I wasn't exporting the function (i.e. it was
an internal function). If you use the package devtools to make your package
than you add a roxygen comment to the effect of #' @export and it will pass
the example checks. Not sure what the equivalent is with
