brody: Brody growth model

Description Usage Arguments Author(s) References Examples

Description

Computes the Brody growth model and its inverse

y(t) = α - (α - w_0) * exp(- k * t)

Usage

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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

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

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

drodriguezperez/growthmodels documentation built on May 15, 2019, 2:42 p.m.