request to run spectrogram example code in Matlab

[John W. Eaton]

I'm working on the spectrogram function and can't seem to get the same 
plots as shown in the Matlab online documentation for this function.

Could someone run the following in a recent version of Matlab and post 
the resulting sgram.mat file?  This is the first example from the Matlab 
online documentation for spectrogram.  Also, please verify that the 
figure you generate looks the same as the one there.

N = 1024;
n = 0:N-1;
w0 = 2*pi/5;
x = sin(w0*n)+10*sin(2*w0*n);
s = spectrogram (x);
spectrogram (x, 'yaxis');
%% For the following, I expect one image object as the
%% child of the axes object.  If that's not correct, then
%% can you find the image that is plotted and get the cdata,
%% xlim, and ylim values?
h = get (gca, 'children');
cdata = get (h, 'cdata');
xlim = get (h, 'xlim');
ylim = get (h, 'ylim');
cmap = colormap ();
save sgram.mat x s cdata xlim ylim cmap


Thanks,

jwe