initDispersionParameter {cauphy} | R Documentation |
Initialization of the dispersion parameter.
Description
Initialize the dispersion parameter.
Usage
initDispersionParameter(
tree,
trait,
center,
method.init.disp = c("Qn", "Sn", "MAD", "IQR"),
method
)
Arguments
trait |
named vector of traits at the tips. |
center |
the center parameter of the distribution |
method.init.disp |
the robust estimator method |
method |
the method used to fit the process.
One of |
Details
Constants are taken from Rousseeuw & Croux, 1993.
Value
The initial dispersion parameter.
References
Rousseeuw P.J., Croux C. 1993. Alternatives to the Median Absolute Deviation. Journal of the American Statistical Association. 88:1273–1283.
[Package cauphy version 1.0.3 Index]