janoschek: Janoschek growth model

In growthmodels: Nonlinear Growth Models

Janoschek growth model

Description

Computes the Janoschek growth model and its inverse

y(t) = \alpha *(\alpha - \beta) \exp(-b * t^c))

Usage

janoschek(t, alpha, beta, b, c)

janoschek.inverse(x, alpha, beta, b, c)

Arguments

t	time
alpha	upper asymptote
beta	lower asymptote
b	growth parameter
c	shape parameter
x	size

Author(s)

Daniel Rodriguez

References

Michael J. Panik, "Growth Curve Modeling: Theory and Applications", John Wiley & Sons, December 2013.

Examples

growth <- janoschek(0:10, 10, 2, 0.5, 2)

# Calculate inverse function
time <- janoschek.inverse(growth, 12, 2, 0.5, 2) 

growthmodels documentation built on May 31, 2023, 8:14 p.m.