How write a function that takes a matrix and period omega?

function F = fftfuntion(D, omega)
 
%Input: a matrix D ∈ RN×2, Di = (xi,yi), and the period ω 

check = 0;
x = D(:,1);
y = D(:,2);

end

I need to write a function that takes as input a matrix D ∈ RN×2, Di = (xi,yi), and the period ω. Here is what I have so far. Am I on the right track?

Answer 1

[Sriram Tadavarty]

Hi Prathik,

You are on the right track itself.

Ensure that you define the output variable F and use omega input in the function.

Regards,

Sriram

[Pratik Patel]

how do I define the output variable F?

[Sriram Tadavarty]

You can define it based on what output the function is intended to give.

[Pratik Patel]

This is where it gets tricky... I need to return an output of a plot that uses the fft function to clean the noise. This function doesn't work when I test it against a dataset.

function F = fftfuntion(D, omega)
 
%Input: a matrix D ∈ RN×2, Di = (xi,yi), and the period ω 
%Output a plot showing a fit of the data without noise.
%Do this by cleaning the noise in the frequency space.

check = 0;
x = D(:,1);
y = D(:,2);

t = 0:0.01:2*pi;

plot(t,x)

y = fft(x)


end

[Sriram Tadavarty]

There are few things missed in the code. Why is omega not used? Should the fft(x) be F rather than y?