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From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Gaussian 3D plot
Date: Sat, 13 Apr 2013 14:40:43 -0500
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On 4/13/2013 1:21 PM, JAMES wrote:
> Hi Yehonatan,
>
> Many thanks for your patience and thorough explanations. I understand
> the theory behind how the matrices define x & y data points and by
> computing an associated z (height) value a 3D plot can be generated. The
> main problem for me is that I do not have any data points to work from.
> Just a mathematical expression.
...

doc meshgrid

and follow the example of evaluation a function to plot a surface.  Just 
use your equation in place of the example one...

--