Is it possible to model discrete populations using ode45?

Hi,

I am undertaking some population modelling, and the population size falling below 1 (between 0 and 1) is introducing some inaccuracies. Does anyone know of a way to either: - Limit the minimum population size? - Instruct the solver to only deal with integers?

Many thanks,

A

Answer 1

[Sean de Wolski]

It sounds like you will need to include an event that happens when Y <= 1.

http://www.mathworks.com/help/releases/R2013b/matlab/ref/odeset.html