This function fits a diversity-dependent phenotypic evolution model (based on Mahler et al. 2010).
fitDiversityModel(tree, x, d=NULL, showTree=TRUE, tol=1e-6)
# S3 method for fitDiversityModel
logLik(object, ...)
# S3 method for fitDiversityModel
print(x, ...)an object of class "phylo".
a vector with tip values for a continuously distributed trait. For print method, an object of class "fitDiversityModel".
a vector containing the inferred historical diversity at each node in the tree - if d=NULL (the default) function will treat the diversification as if it occurred in a single geographic area.
optional logical value indicating whether to plot the tree transformation implied by the model.
some small value by which d is incremented during rescaling of psi for optimization. If R thinks your matrices are singular during optimization, try increasing tol slightly.
for logLik method, an object of class "fitDiversityModel".
optional arguments for logLik and print methods. Note that for the logLik method the number of fitted parameters ("df") is assumed to be 3 for the diversity dependent model (that is, if psi is estimated) and 2 for the diversity independent model, unless otherwise specified (using the argument df).
An object of class "fitDiversityModel" consisting of the following components:
log-likelihood of the fitted model.
estimated starting value for the rate at the root of the tree.
the estimated rate of change in the rate associated with the addition of a lineage.
a matrix with the variances and covariance of the estimated parameters (from the Hessian).
Mahler, D. L, L. J. Revell, R. E. Glor, and J. B. Losos. 2010. Ecological opportunity and the rate of morphological evolution in the diversification of Greater Antillean anoles. Evolution, 64, 2731-2745.
Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.