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Hello
I want to use fft in MATLAB to analize some exprimental data saved as an excell file attached here as a doc file.
my code:
A=xlsread('Book.xls'); G=A'; x=G(2, : );
N=length(x);
F=[-N/2:N/2-1]/N;
X = abs(fft(x-mean(x),N))
X = fftshift(X);
plot(F,X)
But it plots a graph...
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