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

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Pratik Patel 2020-3-15

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评论： Sriram Tadavarty 2020-3-15

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?

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Sriram Tadavarty 2020-3-15

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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

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Pratik Patel 2020-3-15

在 MATLAB Online 中打开

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