gompertz_init: Initiate self-starting Gompertz model

In mnirs: Muscle Near-Infrared Spectroscopy Processing and Analysis

Initiate self-starting Gompertz model

Description

gompertz_init(): Returns initial values for the parameters in a selfStart model. Used by both SSgompertz() and SSgompertz_left(); the symmetric logistic linearisation does not apply to Gompertz forms, so initialisation is derivative-based via init_inflection().

Usage

gompertz_init(mCall, data, LHS, ...)

Arguments

mCall	A matched call to the function model.
data	A data frame with predictor t and the response variable.
LHS	The left-hand side expression of the model formula.
...	Additional arguments, including fixed, a named list of user-fixed parameter values from init_fixed() used to seed the remaining free estimates.

Value

gompertz_init(): Initial starting estimates for parameters in the model called by SSgompertz() or SSgompertz_left().

mnirs documentation built on Sept. 13, 2026, 1:06 a.m.