fft with frequency axis on log scale

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Baba
Baba 2011-11-1
Hello, I have a sampled signal and I'd like to take it's fft with the x axis on log scale. Also, is there anything wrong with the way I'm doing the fft? Thanks
Here's my code
fs=2000;
Hs=spectrum.periodogram; % Use default values
plot(psd(Hs,Signal,'Fs',fs))

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Wayne King
Wayne King 2011-11-1
Hi, You can just save the output of psd() and use semilogx
fs=2000;
Hs=spectrum.periodogram; % Use default values
psdest = psd(Hs,Signal,'Fs',fs);
semilogx(psdest.Frequencies,10*log10(psdest.Data));
grid on;

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