Calculates phylogenetically independent contrasts.
pic.motmot(x, phy)A matrix of trait values with taxon names as rownames.
An object of class "phylo" (see ape package).
contr A matrix with two columns containing raw contrasts in the first column and their expected variances in the second column.
root.v Expected variances of branches either side of root
V Expected variance at the root
Extracts values for contrasts, expected variances using contrasts by calling pic.
Felsenstein J. 1985. Phylogenies and the comparative method. American Naturalist 125, 1-15.