Inverse of the parameter transformation

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Description

This is the inverse of the function theta2z

Usage

1

Arguments

z

value to be transformed

family

an integer defining the bivariate copula family: 1 = Gauss, 3 = Clayton, 4=Gumbel, 5=Frank

Details

The function theta2z transforms the parameter of a copula such that the transformed value in unconstrained. This function is its inverse.

Value

transformed value

Author(s)

Nicole Kraemer

See Also

theta2z

Examples

1
##---- this is an internal function ----