brody: Brody growth model

In growthmodels: Nonlinear Growth Models

Brody growth model

Description

Computes the Brody growth model and its inverse

y(t) = \alpha - (\alpha - w_0) exp(- k t)

Usage

brody(t, alpha, w0, k)

brody.inverse(x, alpha, w0, k)

Arguments

t	time
alpha	upper asymptote
w0	the value at t = 0
k	growth rate
x	size

Author(s)

Daniel Rodriguez

References

M. M. Kaps, W. O. W. Herring, and W. R. W. Lamberson, "Genetic and environmental parameters for traits derived from the Brody growth curve and their relationships with weaning weight in Angus cattle.," Journal of Animal Science, vol. 78, no. 6, pp. 1436-1442, May 2000.

Examples

growth <- brody(0:10, 10, 5, 0.3)

# Calculate inverse function
time <- brody.inverse(growth, 10, 5, 0.3)

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