How to get the matrix of corresponding values of a PSD graph?

I did PSD of a digital data-set. I can plot the PSD graph. But I need the corresponding values of the graph for further operation. How can I do that? My code is here.

load 's01.mat';
t = linspace(1,8064);
new = data(:,1,:);
new = new(1,1,:);
new = reshape(new,1,8064);
Fs = 128;
h = spectrum.welch;
sx1 = psd(h,new,'Fs',Fs);
figure
subplot 211, plot(new);
subplot 212, plot(sx1);

Answer 1

[Star Strider]

The psd function is going to be deprecated in the not distant future.

I would use the pwelch (link) function instead of psd. It should provide all the information you want.