scipy.sparse.coo_array.tocsc#
- coo_array.tocsc(copy=False)[source]#
Convert this matrix to Compressed Sparse Column format
Duplicate entries will be summed together.
Examples
>>> from numpy import array >>> from scipy.sparse import coo_matrix >>> row = array([0, 0, 1, 3, 1, 0, 0]) >>> col = array([0, 2, 1, 3, 1, 0, 0]) >>> data = array([1, 1, 1, 1, 1, 1, 1]) >>> A = coo_matrix((data, (row, col)), shape=(4, 4)).tocsc() >>> A.toarray() array([[3, 0, 1, 0], [0, 2, 0, 0], [0, 0, 0, 0], [0, 0, 0, 1]])