Plot a Histogram of the Amplitudes of various frequencies of a Signal
20 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hello, I need to plot a bar Histogram of a signal after performing a fft. It is an ENF data, so most amplitudes should be around 60Hz region and around within +/-0.5 Hz. I want an output like the figure I attached. The signal 'x' has length L=10000
code:
x = x(1:1000,1);
T = 1/fs;
L=length(x);
t = (0:L-1)*T;
Y = fft(x);
P2 = abs(Y/L);
P1 = P2(1:L/2+1);
P1(2:end-1) = 2*P1(2:end-1);
f = fs*(0:(L/2))/L;
plot(f,P1)
title('Single-Sided Amplitude Spectrum of X(t)')
xlabel('f (Hz)')
I tried using the code
figure(2)
hist(P1,f);
But it doesn't work as I expect. Please help out. thanks.
4 Kommentare
Antworten (0)
Siehe auch
Kategorien
Mehr zu Histograms finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!