for loops for matrix in matlab

main.m
% Example matrix:
mat = [1 2 3; 4 5 6; 7 8 9];

% Iterate through rows:
for i = 1:size(mat, 1)
  % Iterate through columns:
  for j = 1:size(mat, 2)
    % Access each element:
    element = mat(i, j);
    % Perform operation on element:
    new_element = element + 1;
  end
end
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main.m
% Example matrix:
mat = [1 2 3; 4 5 6; 7 8 9];

% Reshape matrix into a vector:
vec_mat = reshape(mat, 1, numel(mat));

% Perform operation on vectorized matrix:
new_vec_mat = vec_mat + 1;

% Reshape vectorized matrix back into original shape:
new_mat = reshape(new_vec_mat, size(mat));
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