csr_matric scipy lib

>>> row = np.array([0, 0, 1, 2, 2, 2])
>>> col = np.array([0, 2, 2, 0, 1, 2])
>>> data = np.array([1, 2, 3, 4, 5, 6])
>>> csr_matrix((data, (row, col)), shape=(3, 3)).toarray()
array([[1, 0, 2],
       [0, 0, 3],
       [4, 5, 6]])

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Marky 85 points

                                    &gt;&gt;&gt; import numpy as np
&gt;&gt;&gt; from scipy.sparse import csr_matrix
&gt;&gt;&gt; csr_matrix((3, 4), dtype=np.int8).toarray()
array([[0, 0, 0, 0],
       [0, 0, 0, 0],
       [0, 0, 0, 0]], dtype=int8)

Thank you! 9

3.89 (9 Votes)

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