FFT of 100 data points

Hi..

my problem is this:

I have 100 data taken from 0 to 346.5 microseconds. the time interval for each data is 3.5 microseconds. I need to plot the FFT of this data. Please help me..

Thank you very much.

Answer 1

[Amith Kamath]

if x is your data,

L=length(x);
dt=3.5*10^(-6); %time.
fs=1/dt;
t=(0:1:L-1)*dt; %If you'd like to plot the time signal: plot(t,x)
out=fft(x,L)/L;

figure, plot(fs/2*linspace(0,1,(length(out)/2)+1),abs(out(1:(length(out)/2)+1))),title('One sided Spectrum')
xlabel('Normalized frequency')
ylabel('Magnitude')

[happy]

Thank you very much! :D

This is a great help to me..

Thank you again... :)

Answer 2

[Ryan T]

This was extremely helpful... Thank you Amith!