Weibull growth model
Computes the Weibull growth model
y(t) = α - β * exp(-k * t^m)
weibull(t, alpha, beta, k, m) weibull.inverse(x, alpha, beta, k, m)
t |
time |
x |
size |
alpha |
upper asymptote |
beta |
growth range |
k |
growth rate |
m |
slope of growth |
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.
growth <- weibull(0:10, 10, 0.5, 0.3, 0.5) # Calculate inverse function time <- weibull.inverse(growth, 10, 0.5, 0.3, 0.5)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.