dLogisticExponentialGrowth | R Documentation |
Density and random generation of a logistic-exponential growth model distribution.
dLogisticExponentialGrowth(x, a, b, r1, r2, k, mu, log)
rLogisticExponentialGrowth(n, a, b, r1, r2, k, mu)
x |
vector of calendar years (in BP). |
a |
lower (earliest) limit of the distribution (in BP). |
b |
upper (latest) limit of the distribution (in BP). |
r1 |
growth rate of the logistic phase. |
r2 |
growth rate of exponential phase. |
k |
initial proportion of the carrying capacity (must be between 0 and 1). |
mu |
change point (in BP). |
log |
TRUE or 1 to return log probability. FALSE or 0 to return probability. |
n |
number of random draws. Currently only n = 1 is supported, but the argument exists for standardization of "r" functions. |
For dLogisticExponentialGrowth
: the probability (or likelihood) or log probability of an observed date x (in Cal BP). For rLogisticExponentialGrowth
a simulated date in Cal BP.
Robert DiNapoli & Enrico Crema
p = list(r1=0.01,r2=-0.001,k=0.001,mu=4500)
modelPlot(model = dLogisticExponentialGrowth,a=6000,b=4000,params=p,alpha = 1)
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