Computes the Chapman-Richards growth model $$y(t) =
\alpha (1 - \beta exp(-k t)^{1/(1-m)})$$
Usage
chapmanRichards(t, alpha, beta, k, m)
Arguments
t
time
alpha
upper asymptote
beta
growth range
k
growth rate
m
slope of growth
References
D. Fekedulegn, M. Mac Siurtain, and J. Colbert,
"Parameter estimation of nonlinear growth models in
forestry," Silva Fennica, vol. 33, no. 4, pp. 327-336,
1999.