Want to use a vector as parameter to a function, without having to separate its elements

Question

If I call a matlab function with: func(1,2,3,4,5) it works perfectly.

But if I do: a=[1,2,3,4,5] %(a[1;2;3;4;5

Answer 1

Maybe you could try with nargin - a variable in a function that has the value of the number of input arguments. Since you have a need for different length input, I believe this can best be handled with varargin, which can be set as the last input variable and will then group together all the extra input arguments..

function result = func(varargin)
    if nargin == 5: % this is every element separately
        x1 = varargin{1}
        x2 = varargin{2}
        x3 = varargin{3}
        x4 = varargin{4}
        x5 = varargin{5}
    else if nargin == 1: % and one vectorized input
        [x1 x2 x3 x4 x5] = varargin{1}

I've written x1...x5 for your input variables