How can I re-write an anonymous function into a standard function?

Question

Jesús Isaac Vázquez Serrano 2019-11-8

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编辑： David Goodmanson 2019-11-10

I'm new to matlab. I would like to rewrite the following anonymous function into a standard function but I got struggled with the syntax.

Original function:

objc = @(w) [-mu'*w' w*C*w'];

My adjustment:

function [returns,variance] = MultiObjective(mu,C)
    returns = -1*mu'*w';   
    variance = w*C*w';
end

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dpb 2019-11-9

The anonymous function has only w as the parameter; mu, C are embedded into the function definition with the values they contain at the time the function is defined.

Your function, would also have to pass w

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Answer 1

David Goodmanson 2019-11-9

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https://ww2.mathworks.cn/matlabcentral/answers/490058-how-can-i-re-write-an-anonymous-function-into-a-standard-function#answer_400607

编辑：David Goodmanson 2019-11-10

在 MATLAB Online 中打开

Hi Jesus,

[ CORRECTED to include a minus sign ]

function [returns,variance] = MultiObjective(mu,C,w)
    returns = -mu'*w';   
    variance = w*C*w';
end

Since it is a normal (non-anonymous) function, all variables are passed in on input, in whatever order you choose. (Of course you could define hardwired constants inside the function as well). Also, no need to multiply by -1.