MATLAB: Basic code question

MATLAB

Hello
What does the '@' symbol do in this equation?
Is the first (z) multiplied the e^(…)?
thank you
% Gaussian kernel function
kerf=@(z)exp(-z.*z/2)/sqrt(2*pi);

Best Answer

It is a function handle. It means that you are defining an anonymous function 'kerf' that takes z as an input. The actual equation is just
exp(-z.*z/2)/sqrt(2*pi)
The User Guide has a pretty good write-up about these. Search "anonymous function" in the Help.
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