How to put in 3D graph?

I'm doing an analysis of a EMG signal and want to put the spectogram in a 3D graph! Now i´m using the function imagesc but it gives me a 2D graph! what function do i use?

% perform STFT
[stft, f, t] = stft(Data, wlen, h, nfft, fs);

 % take the amplitude of fft(x) and scale it, so not to be a
 % function of the length of the window and its coherent amplification
SA = abs(stft)/wlen/K;

 % correction of the DC & Nyquist component
if rem(nfft, 2)                     % odd nfft excludes Nyquist point
    SA(2:end, :) = SA(2:end, :).*2;
else                                % even nfft includes Nyquist point
    SA(2:end-1, :) = SA(2:end-1, :).*2;
end

 % convert the amplitude spectrogram to dB
SA = 20*log10(SA);

 figure(2)
 imagesc(t, f, SA)

Answer 1

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See the documentation for 3D Spectrogram Visualization for details on how to code it.