SGompertz

Contents

Function

y=ae^{-\exp (-k(x-x_c))}

Brief Description

Gompertz growth model for population studies, animal growth.

Reference: Seber, G. A. F., Wild, C. J. 1989. Nonlinear Regression. John Wiley & Sons, Inc. pp. 330 - 331

Sample Curve

Image:CFF Image444.jpg

Parameters

Number: 3

Names: a, xc, k

Meanings: a = amplitude, xc = center, k = coefficient

Lower Bounds: a > 0.0, k > 0.0

Upper Bounds: none

Script Access

nlf_sgompertz(x,a,xc,k)

Function File

FITFUNC\GOMPERTZ.FDF

Category

Growth/Sigmoidal