How to create object within function MatLab without creating a new file - matlab

Question

I am working on a project with the following specs:
https://drive.google.com/file/d/14xaCK-1Mpd8FXM-19pfFC1UTk2V9oXkQ/view?usp=sharing
My code is attached below.
How do I get my final output as a data object and info object like they are asking, without creating a new class file? The format required is in the picture below.
Final format required:
function [data,info] = OneNormLPxxx(A,b)
%L1 norm minimization for a given A and b.
% Detailed explanation goes here
count = 0;
b_vect = b;
[m,n] = size(A);
max_count = 3*nchoosek(m,n);
set_B = 1:n;
M = inv(A(set_B, :));
is_opt = 0;
while (is_opt == 0)
if (det(A(set_B,:)) == 0)
info = untitled4;
info.run = "Failure";
info.msg = "Degeneracy Problem";
data = untitled3;
return
end
if (max_count <= count)
info = untitled4;
info.run = "Failure";
info.msg = "Arithmetic Problem";
data = untitled3;
return
end
set_B_Comp = setdiff(1:m,set_B);
x_temp = M*b_vect(set_B);
h = A*x_temp - b_vect;
h(set_B_Comp) = A(set_B_Comp,:)*x_temp - b_vect(set_B_Comp);
y_vect = zeros(m, 1);
y_vect(set_B_Comp) = sign(h(set_B_Comp));
y_vect(set_B) = -(M')*((A(set_B_Comp,:)')*y_vect(set_B_Comp));
abs_y_B = abs(y_vect(set_B));
if all(abs_y_B <= 1)
is_opt = 1;
x_opt = x_temp;
opt_val = sum(abs(A*x_opt - b_vect));
data = untitled3;
data.obj = opt_val;
data.x = x_opt;
data.loop = count;
info = untitled4;
info.run = "Success";
return
% return B and x
else
all_index_y_vect_more_than_1 = find(abs(y_vect(set_B)) > 1);
s = all_index_y_vect_more_than_1(1);
y_s = y_vect(s);
t_vect = zeros(m, 1);
t_vect(set_B_Comp) = -(sign(y_s))*(y_vect(set_B_Comp)).*(A(set_B_Comp,:)*M(:,s));
cur_min = abs(h(set_B_Comp(1)))/t_vect(set_B_Comp(1)) + 1;
cur_r = set_B_Comp(1);
for j = set_B_Comp
h_j = h(j);
t_j = t_vect(j);
temp1 = abs(h_j)/t_j;
if (temp1 < cur_min) && (temp1 > 0) && (t_j > 0)
cur_min = temp1;
cur_r = j;
end
end
r = cur_r;
j_s = set_B(s);
set_B_new = setdiff(union(set_B, r), j_s);
set_B = set_B_new;
set_B_Comp = setdiff(1:m,set_B);
theta = (A(r,:)*M)';
M(:,s) = (1/theta(s))*M(:,s);
for j = 1:n
if (j ~= s)
M(:,j) = M(:,j) - theta(j)*M(:,s);
end
end
end
count = count + 1;
end
end

Answer 1

Rather than using
info = untitled4;
Use
info = struct();
This will create a MATLAB structure for storing your data.