display.untb

From untb v1.6-5 by Robin K S Hankin

Animation of neutral ecological drift

Displays an ongoing simulation of neutral ecological drift using nice colours and a simple animation technique

Keywords: math

Usage

display.untb(start, gens=100, prob.of.mutate = 0, cex=3, individually
= TRUE, ask = FALSE, flash = FALSE, delay = 0, cols=NULL, ...)

Arguments

start: Starting ecosystem; coerced to class census. Usually, pass an object of class count; see examples. To start with a monoculture of size 10, use start=rep(1,10) and to start with a system of maximal diversity (ie all singletons),
gens: Number of generations to simulate
prob.of.mutate: Probability of mutation. The default of zero corresponds to $\theta=0$ and this means that any ecosystem will eventually become a monoculture (it is particularly instructive to watch this happen, especially with a starting ecosystem of ma
cex: The size of the dots used for plotting, defaulting to 3
individually: Boolean, with default TRUE meaning that a timestep means the death of a single individual and the simultaneous birth of a new individual; and FALSE meaning that a timestep refers to every individual in the system
ask: Boolean, with default FALSE meaning to display the generations autonomously, and TRUE meaning to wait for the user to hit the return before proceeding
flash: Boolean, with TRUE meaning to indicate the site of a death/birth with a flashing ring; and default FALSE meaning to omit the flashing ring. Use TRUE for pedagogic purposes, possibly with ask
delay: Time delay between generations in seconds; meaningful whatever the value of flash and individually
cols: A vector of colours with default NULL meaning to choose them randomly. Useful for printing stills from a movie
...: Further arguments passed to plot() and points()

References

S. P. Hubbell 2001. The Unified Neutral Theory of Biodiversity. Princeton University Press.

Examples

data(butterflies)
display.untb(start=butterflies,prob=0, gens=1e2)

Documentation reproduced from package untb, version 1.6-5, License: GPL

Community examples

Looks like there are no examples yet.