csr_matrix.py

>>> d.toarray()
array([[2, 1, 0, 0],
       [0, 1, 1, 1]])
>>> c.toarray()
array([[2, 1, 0, 0],
       [0, 1, 1, 1]])

>>> d
<2x4 sparse matrix of type '<type 'numpy.int64'>'
	with 5 stored elements in Compressed Sparse Row format>
>>> c
<2x4 sparse matrix of type '<type 'numpy.int64'>'
	with 6 stored elements in Compressed Sparse Row format>

>>> d.data
array([2, 1, 1, 1, 1])
>>> d.indices
array([0, 1, 1, 2, 3])
>>> d.indptr
array([0, 2, 5])

>>> c.data
array([1, 1, 1, 1, 1, 1]) !!!!!!
>>> c.indices
array([0, 1, 0, 2, 3, 1], dtype=int32)
>>> c.indptr
array([0, 3, 6], dtype=int32)

>>> c.data = np.array([2, 1, 1, 1, 1, 1])
>>> c.toarray()
array([[3, 1, 0, 0],
       [0, 1, 1, 1]])

>>> c.data=np.array([2,1,2,1,1,-1])
>>> c.toarray()
array([[4, 1, 0, 0],
       [0, -1, 1, 1]])