Description Usage Arguments Author(s) References Examples
Computes the negative exponential growth model
y(t) = α * ( 1 - exp(-k * t))
1 2 3 | negativeExponential(t, alpha, k)
negativeExponential.inverse(x, alpha, k)
|
t |
time |
alpha |
upper asymptote |
k |
growth rate |
x |
size |
Daniel Rodriguez
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.
1 2 3 4 | growth <- negativeExponential(0:10, 1, 0.3)
# Calculate inverse function
time <- negativeExponential.inverse(growth, 10, 0.3)
|
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