minusLikelihoodFixedRoot_lm function

Minus Likelihood function for a Cauchy model

Gives the minus likelihood function, with fixed root, lm model

minusLikelihoodFixedRoot_lm(
  param,
  param_names,
  tree,
  trait,
  Xdesign,
  model,
  rootTip
)

Arguments

• param: the parameters where to evaluate the function
• param_names: the parameter names
• Xdesign: the design matrix
• model: a model for the trait evolution. One of "cauchy" or "lambda" (see Details).

Returns

The value of minus the log-likelihood.