Why my user-defined matlab function returns NaN?

Question

Ramiro 2023-12-14

0
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https://ww2.mathworks.cn/matlabcentral/answers/2060659-why-my-user-defined-matlab-function-returns-nan

移动：Voss 2023-12-14

I wrote a matlab function but when the input argument vector has only one element, it returns NaN. I checked my code and I think everything is OK.

The W argument is a n x 1 vector or a 1 x n vector of weights that sum 1. However, when W = 1, the function returns NaN.

I think it is a bug of my Matlab version (2023b for Mac Intel).

Thanks in advance for your help.

Ramiro

W = 1;
orn = Orness(W)
orn = 1
function orn = Orness(W)
    nW = numel(W);
    if nW >= 2
        orn = zeros(nW,1);
        for j = 1:nW
            orn(j) = ((nW-j)/(nW-1))*W(j);
        end
        orn = sum(orn);
    elseif nW == 1
        orn = 1;
    end
end