Merge result after for function - matlab

Question

Good morning everybody
I work to develop mathematical model to solve one of the industrial engineering problem but I have a problem in the write of the MATLAB code. So I simplified this problem in the following code. I need to merge all the result of X in one matrix after the for function used to use it in the next step (in this simple case this matrix will be 40*3)
LIST=randi([0,1],[4,3]);
for i = 1:10
j=i
V=randi([0,1],[4,3]);
for m = 1:4
for n = 1:2
if V(m,n)== 1;
X(m,n) = LIST(m,n);
elseif V(m,n)== 0;
X(m,n) = 2;
end
end
end
for m = 1:4
for n = 3
if V(m,n)== 1;
X(m,n) = LIST(m,n);
elseif V(m,n)== 0;
X(m,n) = 3;
end
end
end
X
end
Thank you for your time and your consideration

Answer 1

At each iteration of the outer loop (for i = 1:10) the values in the X matrix are overwritten.
In order to store all the values you need to increment the row value of the X matrix of the value of max limit of the second loop (for m = 1:4) that is 4.
You can do it by modifying the indexing of the X matrix as follows:
X(m+(i-1)*4,n)
You can make your script more "general" by identifying the limit evaluating it as the number of rows in the LIST matrix using the function size function:
[n_row,n_col]=size(LIST)
In this way
at the first iteration of the outer loop, the row index will range from 1 to 4.
at the second iteration itr will range from 1+(2-1)*4 to 4+(2-1)*4 that is from 5 to 8
and so on
This is the updated code
LIST=randi([0,1],[4,3]);
[n_row,n_col]=size(LIST)
for i = 1:10
j=i
V=randi([0,1],[4,3]);
% for m = 1:4
for m = 1:n_row
for n = 1:2
if V(m,n)== 1;
% X(m,n) = LIST(m,n);
X(m+(i-1)*n_row,n) = LIST(m,n);
elseif V(m,n)== 0;
% X(m,n) = 2
X(m+(i-1)*n_row,n) = 2;
end
end
end
% for m = 1:4
for m = 1:n_row
for n = 3
if V(m,n)== 1;
% X(m,n) = LIST(m,n)
X(m+(i-1)*n_row,n) = LIST(m,n);
elseif V(m,n)== 0;
% X(m,n) = 3;
X(m+(i-1)*n_row,n) = 3;
end
end
end
X
end
Hope this helps.
Qapla'