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

2 次查看（过去 30 天）
Pratik Patel
Pratik Patel 2020-3-15
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?

请先登录，再回答此问题。

采纳的回答

Sriram Tadavarty
Sriram Tadavarty 2020-3-15
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
  4 个评论
显示 2更早的评论
Pratik Patel
Pratik Patel 2020-3-15
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
Sriram Tadavarty 2020-3-15
There are few things missed in the code. Why is omega not used? Should the fft(x) be F rather than y?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Fast Fourier Transforms 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by