Description Usage Arguments Author(s) References Examples
Computes the Schnute growth model
y(t) = (r_0 + β * exp(k * t))^m
1 2 3 | schnute(t, r0, beta, k, m)
schnute.inverse(x, r0, beta, k, m)
|
t |
time |
r0 |
reference value |
beta |
growth displacement |
k |
growth rate |
m |
slope of growth |
x |
size |
Daniel Rodriguez
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.
1 2 3 4 | growth <- schnute(0:10, 10, 5, .5, .5)
# Calculate inverse function
time <- schnute.inverse(growth, 10, 5, .5, .5)
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