Minimisation of object function having 2d array as variables.

I want to minimise the following function using the optimtool.

Can anyone help me with its code. I am having problem having to use 2d array as the variables.

Answer 1

[Thiago Henrique Gomes Lobato]

Any 2D array can be represented with a vector, which is the normal input to optimization functions, so all you need to do is write your function to take a vector as input and them convert it to a matrix. A minimalist example:

x = randn(7); % Original matrix
opt = fun(x(:)); % Convert matrix to a vector for function

function opt = fun(x)
    x = reshape(x,7,7) % Convert vector to matrix
    %... your functio 
end