ode step

is it possible to store value in a matrix other than equations in odesolver,if any variable which is getting change in each step and being used in equation

[Jan]

I do not understand the question. Can you post the relevant code and mark, what you want to save?

Answer 1

[Matt Tearle]

Do you mean something like an internal variable in the rate equations? Not exactly. But why would you need this? The ode rate equations are defined in terms of t and y (and any additional parameters), so any calculations performed internally can always be reproduced after the fact. If you need to track this in order to halt execution, you can use and event (see the documentation: MATLAB -> User's Guide -> Mathematics -> Calculus -> Ordinary Differential Equations and go to Examples -> Event Location)

You can also define the 'OutputFcn' property using odeset