franktau: Utility to calculate the parameter theta of a Frank copula...

Description Usage Arguments Value References

View source: R/franktau.R

Description

Implementation of the relationship between theta and tau for a Frank copula. A simplification of an implementation of Diethelm Wuertz in the package "fCopulae". Original implementation falsely gives value of "Inf" for tau = -1, this has been fixed in this implementation.

Usage

1
franktau(tau)

Arguments

tau

double. A numeric value for Kendall's tau.

Value

A value for the parameter theta based on method of moments estimation by the supplied Kendalls'tau.

References

Frees and Valdez (1998). Understanding Relationships Using Copulas. North American Actuarial Journal 2(1):1-25.


AlexanderRitz/copR documentation built on Oct. 30, 2019, 4:11 a.m.