Hi Tuong,
I understand you want to reshape a column vector to it's original matrix form.
To reshape a vector back into its original matrix form, you can use the "reshape" function in MATLAB. Given that you have a vector B and you know the dimensions of the original matrix, you can reshape B to get back the matrix.
For example, if you originally had a matrix A that was 2x2, you can reshape B to be 2x2 as follows:
A = [1 2; 3 4];
B = A(:); % B is now [1; 3; 2; 4]
% To reshape B back to its original form
originalRows = 2; % Number of rows in the original matrix
originalCols = 2; % Number of columns in the original matrix
A_reconstructed = reshape(B, originalRows, originalCols);
This way, you can get back the matrix A from its vectorized form B using the "reshape" function with the known dimensions of the original matrix. Please note that it is required to know the original dimensions of the matrix before vectorization to obtain the original matrix.
Thank you.
