clogistic {primer}R Documentation

Continuous Logistic Growth

Description

A function for continuous logistic growth, for use with ode in the deSolve package.

Usage

clogistic(times, y, parms)

Arguments

times Times points that will return N
y N
parms a vector of logistic growth parameters

Details

The user does not put these directly into this function, but rather uses ode in the deSolve package.

The function is based on the logistic growth equation

dN/dt = rN(1-alpha N)

or equivalently

dN/dt = rN(K-N)/K

Value

Returns of list of one component (required by ode).

Author(s)

Hank Stevens <HStevens@muohio.edu>

References

Lotka, A.J. (1956) Elements of Mathematical Biology. Dover Publications, Inc.

Stevens. M.H.H. (2009) A Primer of Ecology with R. Use R! Series. Springer.

See Also

dlogistic, thetalogistic, levins, lvcomp2, lvcompg

Examples

library(deSolve)
p <- c(1,.01)
time <- 1:10
initialN <- 10
out <- ode(y=initialN, times=time,
             func=clogistic, parms=p) 
plot(time, out[,-1], type='l')

[Package primer version 0.2 Index]