growthmodels: schnute – R documentation

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schnute

Schnute growth model

Description

Computes the Schnute growth model

y(t) = (r_0 + β * exp(k * t))^m

Usage

schnute(t, r0, beta, k, m)

  schnute.inverse(x, r0, beta, k, m)

Arguments

`t`	time
`x`	size
`r0`	reference value
`beta`	growth displacement
`k`	growth rate
`m`	slope of growth

References

A. Khamiz, Z. Ismail, and A. T. Muhammad, "Nonlinear growth models for modeling oil palm yield growth," Journal of Mathematics and Statistics, vol. 1, no. 3, p. 225, 2005.

Examples

growth <- schnute(0:10, 10, 5, .5, .5)
# Calculate inverse function
time <- schnute.inverse(growth, 10, 5, .5, .5)

growthmodels

Nonlinear Growth Models

v1.2.0

GPL-3

Authors

Daniel Rodriguez Perez

Initial release

2013-11-23