initLambdaParameter: Initialization of the lambda parameter.
Description
Initialize the lambda parameter.
Usage
initLambdaParameter(tree, trait, disp_hat, tol = 0.1)
Value
The initial lambda parameter.
Arguments
- trait
named vector of traits at the tips.
- disp_hat
the previously estimated dispersion
- tol
the percentage of tip pairs to keep for the computation. Default to 0.1.
Details
Use linear combinations of cherries to get a first estimate of lambda.