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Matlab demo running error, help debug please

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neoflash

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errors in matlab demos

There is a Matlab demo in help file on PSD.

fs = 1000; % Sampling frequency
t = (0:fs)/fs; % One second worth of samples
xn = sin(2*pi*50*t);
Hs = spectrum.periodogram('Hamming');
psd(Hs,xn,'Fs',fs,'NFFT',1024,'SpectrumType','twoside')

[Pxxo,F] = psd(Hs,xn,'Fs',fs,'SpectrumType','onesided');
Pow = (fs/(2*length(Pxxo))) * sum(Pxxo)

However, during running, it reported error as:

??? Error using ==> psd
Too many output arguments.

Error in ==> psd_test2 at 7
[Pxxo,F] = psd(Hs,xn,'Fs',fs,'SpectrumType','onesided');

what is wrong with this demo?

thanks.
 

Hi
I tested the codes in MATLAB 7 and it worked well.
here is the graph.
cheers
 

what is the value you get for POW?
 

Hi
ecuse me if the file wasn't uploaded my system cannot properly upload the file.
as i read matlab help, psd cannot output frequency as it's written and it creates an object data .
try command :'pwelch' instead.
 

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    neoflash

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