Hi everyone, does anyone know how to extract the time step index in an ode solver? such as ode45? F

So basically what I'm trying to do is import another variable which is needed for the initiation of the calculations, I need the code to read the correct value at each timestep, if I add the variable to the end (so after the options input variable) it imports the whole matrix (for all timesteps)...

Answer 1

[Jan]

What is the problem, when the complete matrix is delivered?

Use anonymous functions to provide parameters: http://www.mathworks.com/matlabcentral/answers/1971

Remember, that Matlab's ODE integrators are not designed to handle discontinuties: http://www.mathworks.com/matlabcentral/answers/59582#answer_72047

[Feras Al-Saab]

Thanks, Jan, The problem is the equation uses another variable that changes at each time step within the ode solver. It might be a stupid question but I cant get it to work.