One day it Worked, the other Day it doesn´t... Error in Spectrogram

Specification of FFT parameters

    T=10; %Sampling period
    Fs=1/T; %Sampling frequency
    N=length(i0);  
    NxtPow2=2^nextpow2(N);
    Pow=log2(NxtPow2);
    N=2^(Pow-1);
    f_PSD=Fs/2*linspace(0,1,N);
    nfft=length(f_PSD);
   
    %     FFT of current and potential
  p0=abs(p0);
    fft_p=fft(p0,N);
    PSD_p=abs(fft_p);
    PSD_p=2*PSD_p/N;
    PSD_p(1,1)=PSD_p(1,1)/2;
  i0=abs(i0);
    fft_i=fft(i0,N);
    PSD_i=abs(fft_i);
    PSD_i=2*PSD_i/N;
    PSD_i(1,1)=PSD_i(1,1)/2;    
    
%     Plot of Power Spectral Density of current and potential.
    
    figure(2)    

    subplot(2,2,1)
    grid on
    plot(f_PSD,10*log10(PSD_p))
    title('Raw Potential PSD')
    set(gca,'TickDir','out')
    xlabel('Frequency [Hz]')
    ylabel('PSD [V²/Hz]')
    hold on
    
    subplot(2,2,2)
    plot(f_PSD,10*log10(PSD_i))
    grid on
    title('Raw Current PSD')
    set(gca,'TickDir','out')
    xlabel('Frequency [Hz]')
    ylabel('PSD [A²/Hz]')
    hold on
    
    subplot(2,2,3)
    spectrogram(p0,hann(30),15,nfft,Fs,'yaxis')
    title('Raw Potential Noise Spectrogram')
    set(gca,'YScale','log')
    set(gca,'TickDir','out')
    hold on

    subplot(2,2,4)
    spectrogram(i0,hann(30),15,nfft,Fs,'yaxis')
    title('Raw Current Noise Spectrogram')
    set(gca,'YScale','log')
    set(gca,'TickDir','out')
    hold on

Errors:

Error using spectrogram (line 174)

Too many input arguments.

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in spectrogram (line 194)

spectrogram({x},'spect',inpArgs{:});

Error in MatLab09092021 (line 92)

spectrogram(p0,hann(30),15,nfft,Fs,'yaxis')

[Sean Janik Winter]

The PSD is gettin plotted but i dont get the Spectrograms... Yesterday it worked.

[Walter Roberson]

Check

which -all spectrogram

At the moment I suspect that you named your own code spectrogram

[Sean Janik Winter]

Now this opens

Error using zeros
Requested 131072x147599x1 (144.1GB) array exceeds maximum
array size preference (31.9GB). This might cause MATLAB to
become unresponsive.

Error in computeDFT>computeDFTviaFFT (line 81)
xw = zeros(nfft,xin_ncol,xin_nchan,'like',xin);

Error in computeDFT (line 45)
    [Xx,f] = computeDFTviaFFT(xin,nx,nfft(1),Fs);

Error in pspectrogram (line 59)
    [y1,f] = computeDFT(bsxfun(@times,winCol,xin),nfft,Fs);

Error in spectrogram (line 194)
  pspectrogram({x},'spect',inpArgs{:});

Error in MatLab14092021 (line 92)
    spectrogram(p0,hann(2*Fs),Fs,nfft,Fs,'yaxis')

Related documentation

[Walter Roberson]

It looks like your nfft is 131072 (that is, 128 k) .

What is your Fs ? And size(p0) ?

[Sean Janik Winter]

My Fs is 1/T so its 1 if T=1 i´ve had a rate of 1 datapoint per second.

I have 147000 datapoints for p0.

[Sean Janik Winter]

Okai i fixed it. I had to many data Points for my Specs so MatLab ran into errors