Function definitions are not permitted.... trying to make an FFT thing

Function definitions are not permitted.... trying to make an FFT thing

I'm trying to get this working

close all
clear all
function[X,freq]=positiveFFT(x,Fs);
N=length(x);
k=0:N-1;
T=N/Fs;
freq=k/T; 
X=fft(x)/N; 
cutOff = ceil(N/2);
X = X(1/cutOff);
freq = freq(1:cutOff);

Any ideas?

Answer 1

[Tom]

I think it might be right. Just discovered that the function line has to be the top line of code otherwise it doesn't work.

Answer 2

[the cyclist]

I think instead of this

X = X(1/cutOff)

you meant this

X = X*(1/cutOff);

Answer 3

[Walter Roberson]

You should think of "clear all" as being like trying to reprogram the fuel injector computer on a car: if you don't have years and years of training, you probably should not even be considering doing it.