cetotrans {island} | R Documentation |
From rates to probabilities
Description
cetotrans
calculates transition probabilities from colonization and
extinction rates for a determined interval of time, when provided.
Usage
cetotrans(c, e, dt = 1)
Arguments
c |
Colonization rate. |
e |
Extinction rate. |
dt |
Interval of time or a vector of time intervals. |
Details
Given a pair of colonization and extinction rates, we can calculate the transition probabilities with the following equations:
T_{01} = (e
/ (c + e)) * (1 - exp( - (c + e) * dt))
T_{10} = (c / (c + e)) * (1 -
exp( - (c + e) * dt))
Value
A matrix with the transition probabilities T_{01}
and T_{10}
of the Markov chain
associated with the specified colonization and extinction rates.
Examples
cetotrans(0.13, 0.19)
cetotrans(0.2, 0.2, 2)
[Package island version 0.2.10 Index]