Qgk_deriv: g-and-k Q derivative

In gk: g-and-k and g-and-h Distribution Functions

g-and-k Q derivative

Description

Derivative of the g-and-k Q function.

Usage

Qgk_deriv(z, A, B, g, k, c = 0.8, getR = FALSE)

Arguments

z	A vector of normal quantiles.
A	Vector of A (location) parameters.
B	Vector of B (scale) parameters. Must be positive.
g	Vector of g parameters.
k	Vector of k parameters. Must be at least -0.5.
c	Vector of c parameters. Often fixed at 0.8 which is the default.
getR	When TRUE returns a faster partial calculation that has the same sign as the derivative (Used in checking parameter validity.)

Value

The derivative of the g-and-k Q function at p.

gk documentation built on Aug. 10, 2023, 5:06 p.m.