'm a beginner who learns to make graphs manually, can this writing be changed using a for loop to make it look simpler

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x_max = 30;
y_max = 30;
% Define cordinate of node 8 x 8 / n x n
nodes = [1 1; 2 1; 3 1; 4 1; 5 1; 6 1; 7 1; 1 8;
1 2; 2 2; 3 2; 4 2; 5 2; 6 2; 7 2; 8 2;
1 3; 2 3; 3 3; 4 3; 5 3; 6 3; 7 3; 8 3;
1 4; 2 4; 3 4; 4 4; 5 4; 6 4; 7 4; 8 4;
1 5; 2 5; 3 5; 4 5; 5 5; 6 5; 7 5; 8 5;
1 6; 2 6; 3 6; 4 6; 5 6; 6 6; 7 6; 8 6;
1 7; 2 7; 3 7; 4 7; 5 7; 6 7; 7 7; 8 7;
1 8; 2 8; 3 8; 4 8; 5 8; 6 8; 7 8; 8 8];
%make all node value 0
A = zeros(size(nodes,1), size(nodes,1));
%the connected node has a value of 1 in the Adjacency Matric
A(10,11) = 1;
A(10,18) = 1;
A(11,12) = 1;
A(11,19) = 1;
A(12,13) = 1;
A(12,20) = 1;
A(13,21) = 1;
A(21,20) = 1;
A(20,12) = 1;
A(20,19) = 1;
A(19,11) = 1;
A(19,18) = 1;
A(18,10) = 1;
A(21,29) = 1;
A(29,37) = 1;
A(37,45) = 1;
A(45,53) = 1;
A(53,52) = 1;
A(52,51) = 1;
A(51,50) = 1;
A(51,43) = 1;
A(50,42) = 1;
A(43,35) = 1;
A(42,34) = 1;
A(35,34) = 1;
A(53,54) = 1;
A(54,55) = 1;
A(55,47) = 1;
A(47,39) = 1;
A(39,31) = 1;
A(39,12) = 1;
%Define the cost matrix
C = ones(size(nodes,1), size(nodes,1));

Accepted Answer

Atsushi Ueno
Atsushi Ueno on 11 Jun 2022
nodes = ...
[1 1; 2 1; 3 1; 4 1; 5 1; 6 1; 7 1; 1 8; % <<== may be the last "1 8;" is typo
1 2; 2 2; 3 2; 4 2; 5 2; 6 2; 7 2; 8 2;
1 3; 2 3; 3 3; 4 3; 5 3; 6 3; 7 3; 8 3;
1 4; 2 4; 3 4; 4 4; 5 4; 6 4; 7 4; 8 4;
1 5; 2 5; 3 5; 4 5; 5 5; 6 5; 7 5; 8 5;
1 6; 2 6; 3 6; 4 6; 5 6; 6 6; 7 6; 8 6;
1 7; 2 7; 3 7; 4 7; 5 7; 6 7; 7 7; 8 7;
1 8; 2 8; 3 8; 4 8; 5 8; 6 8; 7 8; 8 8];
This part can be changed to below by using for loop.
for i = 0:63
nodes(i + 1, :) = [mod(i,8), fix(i/8)] + 1;
end

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