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scipy.sparse.extract

Functions to extract parts of sparse matrices

Functions

find(A)	Return the indices and values of the nonzero elements of a matrix
tril(A[, k, format])	Return the lower triangular portion of a matrix in sparse format
triu(A[, k, format])	Return the upper triangular portion of a matrix in sparse format

Classes

coo_matrix(arg1[, shape, dtype, copy])

A sparse matrix in COOrdinate format.