Question over pseudo algorithm

Hi all!

I'm trying to convert this pseudo algorithm into code. Essentially, I am solving a differential equation with ode45 which gives results in the time domain. Since my function is non-linear, I want to take the last value of each iteration, store it and then FFT the new signal. In the end, I want the results in the frequency domain.

Attahched the pseudocode I'm trying to follow. I'm especially lost on how to create the line: y0(f_i+1) = y_end(f_i)

Any help is appreciated, thank you!

[darova]

Where is an equation for ODE45? Please show your attempts. DO you have a code?

[darova]

im sorry, removed the picture in the qustion for instance. Can you upload it again?

Answer 1

[Jan]

y0(f_i+1) = y_end(f_i):

y0 = y(end, :)