Inverse of the loglogistic5 Model

Solves for x: $$x = c - \frac{1}{b}\,\log\!\frac{ \left(\frac{y - a}{d - a}\right)^{-g} - 1}{g}$$

Usage

inv_loglogistic5(y, a, b, c, d, g)

inv_loglogistic5_fixed(y, fixed_a, b, c, d, g)

Arguments

y

Numeric vector. Observed response.

a, b, c, d

Numeric scalars. Model parameters.

g

Numeric scalar. Asymmetry parameter.

fixed_a

Numeric scalar. Externally fixed lower asymptote.

Value

Numeric vector of x values.

See also

Other inverse-functions: inv_gompertz4(), inv_logistic4(), inv_logistic5(), inv_loglogistic4()