ODE45 Iterations details

Dear Matlabers,

I worked previously on Optimization Algorithms (Built-in ones). And there were built-in functions to know what is going on for every iteration, and what is the error.

Similarly, I want to know what are the output for every ode45 iteration. How can I?

i0 = [0 0 0 0];

[t, sol] = ode45(fun,[0 20], i0);

Thanks in advance

Answer 1

[Torsten]

Display time and sol values either in a function "OutputFcn" or - quick and dirty - directly in "fun" during the solution process.

Concerning "OutputFcn", read the documentation for options of ode45.

[Suhaib Salah]

Could you please give me code lines to understand?

[Steven Lord]

The "Summary of ODE Examples and Files" section of this documentation page lists various examples included in MATLAB and the options that those examples use. The ballode and orbitode examples indicate they use the OutputFcn option. I would start by reading through those examples and trying to understand them.

[Suhaib Salah]

Thanks Steven. I will start doing this.

Best!