Generate matrix at each iteration

Dear friend, please help me to generate a matrix 'yy' which stores matrix "xx" in each iteration.

%% direct search methods
clc;
clear variables;
delta=[2;2];
eps=10^(-3);
%% BOX EVOLUTINARY OPTIMIZATION METHOD
x0=[1;1];
% k=(delta(1)^2+delta(2)^2)^0.5;
for i=1:3
    x1=x0+[1;-1];
    x2=x0+[-1;-1];
    x3=x0+[-1;1];
    x4=x0+[1;1];
    xx=[x0 x1 x2 x3 x4];
    yy=xx();
    f(1)=diremtd(x0);f(2)=diremtd(x1);
    f(3)=diremtd(x2);f(4)=diremtd(x3);f(5)=diremtd(x4);
    A=[f(1),f(2),f(3),f(4),f(5)];
    k=min(A);
    for j=1:5
        if k==f(j)
            tt=xx(:,j);
            t=f(j);
        end  
    end
    x0=tt;
   end

THANK YOU

Answer 1

[Image Analyst]

Instead of

yy=xx();

have

yy{i} = xx;

[DEV]

dear image analyst

xx is 2*5 matrix.

this correction "yy{i} = xx;" WONT WORK

[Image Analyst]

Why not? It puts the whole array into the i'th cell of a cell array called yy. It should work. You asked "generate a matrix 'yy' which stores matrix "xx" in each iteration" and it certainly does that. Since what you asked is not what you want, what do you want? Do you want yy to be a 3-D array where each xx is one slice in a stack of 3 xx's? If so, declare yy before the loop:

yy = zeros(2, 5, 3);

then inside the loop, insert the current xx into slice i:

yy(:, :, i) = xx;

I can't run your code because I don't know what the diremtd() function or variable is.

[DEV]

dear image analyst

thank you so much i got the matrix :).

[Image Analyst]

So are you ready to click the link to "Accept this answer"?