Hello,

Apologies if either (a) this is the wrong place to post this or (b) this 
functionality already exists and I didn't manage to find it.

I have found myself many times in the past wishing that some sort of N-D 
Gaussian function exists in NumPy. For example, when I wish to test that some 
plot or data analysis method is working correctly, being able to call 
`np.gauss()` on a (M,N) array of coordinates or passing it the arrays generated 
by a meshgrid, along with tuples for sigma and mu, would be very convienient.

I could write such a function myself, but that would not be convenient to reuse 
(copying the function to every program/project I want to use it in), and many 
other mathematical functions have "convenience" functions in NumPy (such as the 
square root). More importantly, I imagine that any such function that was 
written into NumPy by the people who regularly contribute to the project would 
be far better than one I wrote myself, as I am not tremendously good at 
programming.

Regards,
Tom
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