View source: R/grow_gompertz.R
grow_gompertz | R Documentation |
Gompertz growth model written as analytical solution of the differential equation system.
grow_gompertz(time, parms)
time |
vector of time steps (independent variable). |
parms |
named parameter vector of the Gompertz growth model with:
|
The equation used here is:
y = K * exp(log(y0 / K) * exp(-mumax * time))
vector of dependent variable (y
)
The naming of parameter "mumax" was done in analogy to the other growth
models, but it turned out that it was not consistent with the maximum
growth rate of the population. This can be considered as bug. The function
will be removed or replaced in future versions of the package. Please use
grow_gompertz2
instead.
Tsoularis, A. (2001) Analysis of Logistic Growth Models. Res. Lett. Inf. Math. Sci, (2001) 2, 23-46.
Other growth models:
grow_baranyi()
,
grow_exponential()
,
grow_gompertz2()
,
grow_huang()
,
grow_logistic()
,
grow_richards()
,
growthmodel
,
ode_genlogistic()
,
ode_twostep()
time <- seq(0, 30, length=200) y <- grow_gompertz(time, c(y0=1, mumax=.2, K=10))[,"y"] plot(time, y, type="l", ylim=c(0, 20))
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.