Description Usage Arguments Value References
Variance covariance matrix of the values at the tips of a tree under an OU process
1 2 3 4 5 6 7 8 9 |
tree |
A phylo object. |
alpha, sigma |
Non-negative numeric values, parameters of the OU process. |
sigmae |
Non-negative numeric value, environmental standard deviation at the tips. |
tanc |
Numerical matrix with the time-distance from the root of the tree to the mrca of each tip-couple. If NULL it will be calculated. |
tauij |
Numerical matrix with the time (patristic) distance between each pair of tips. If NULL, it will be calculated. |
corr |
Logical indicating if a correlation matrix shall be returned. |
a variance covariance or a correlation matrix of the tips in tree.
(Hansen 1997) Stabilizing selection and the comparative analysis of adaptation.
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