MATLAB: Do a matrix,array

matrix arraymatrix manipulation

I have a matrix A=[5 4 3; 1 8 2; 6 9 7] and i want to insert it into one array B=[5 4 3 1 8 2 6 9 7].How i will do it?

This works:

B = reshape(A', 1, []);

 reshape(x,9,1)

 x(:) % this creates a column vector out of a matrix

 codes = matrix(:,1);
 code_list = unique(codes);
 for i = 1:numel(code_list)
  new{i} = matrix(code_list(i) == codes,:);
 end