python - Creat matrix with 2 arrays in numpy -
i want find command in numpy column vector times row vector equals matrix
[1,1,1,1 ] ^t * [ 2,3 ] = [[2,3],[2,3],[2,3],[2,3]]
first, let's define 1-d numpy arrays:
in [5]: 1 = np.array([ 1,1,1,1 ]); 2 = np.array([ 2,3 ]) now, lets multiply them:
in [6]: one[:, np.newaxis] * two[np.newaxis, :] out[6]: array([[2, 3], [2, 3], [2, 3], [2, 3]]) this used numpy's newaxis add together appropriate axes 4x2 output matrix.
python arrays numpy matrix
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