scipy.sparse.spmatrix¶
-
class
scipy.sparse.
spmatrix
(maxprint=50)[source]¶ This class provides a base class for all sparse matrices. It cannot be instantiated. Most of the work is provided by subclasses.
Attributes: Methods
asformat
(self, format[, copy])Return this matrix in the passed format. asfptype
(self)Upcast matrix to a floating point format (if necessary) astype
(self, dtype[, casting, copy])Cast the matrix elements to a specified type. conj
(self[, copy])Element-wise complex conjugation. conjugate
(self[, copy])Element-wise complex conjugation. copy
(self)Returns a copy of this matrix. count_nonzero
(self)Number of non-zero entries, equivalent to diagonal
(self[, k])Returns the k-th diagonal of the matrix. dot
(self, other)Ordinary dot product getH
(self)Return the Hermitian transpose of this matrix. get_shape
(self)Get shape of a matrix. getcol
(self, j)Returns a copy of column j of the matrix, as an (m x 1) sparse matrix (column vector). getformat
(self)Format of a matrix representation as a string. getmaxprint
(self)Maximum number of elements to display when printed. getnnz
(self[, axis])Number of stored values, including explicit zeros. getrow
(self, i)Returns a copy of row i of the matrix, as a (1 x n) sparse matrix (row vector). maximum
(self, other)Element-wise maximum between this and another matrix. mean
(self[, axis, dtype, out])Compute the arithmetic mean along the specified axis. minimum
(self, other)Element-wise minimum between this and another matrix. multiply
(self, other)Point-wise multiplication by another matrix nonzero
(self)nonzero indices power
(self, n[, dtype])Element-wise power. reshape
(self, shape[, order, copy])Gives a new shape to a sparse matrix without changing its data. resize
(self, shape)Resize the matrix in-place to dimensions given by shape
set_shape
(self, shape)See reshape
.setdiag
(self, values[, k])Set diagonal or off-diagonal elements of the array. sum
(self[, axis, dtype, out])Sum the matrix elements over a given axis. toarray
(self[, order, out])Return a dense ndarray representation of this matrix. tobsr
(self[, blocksize, copy])Convert this matrix to Block Sparse Row format. tocoo
(self[, copy])Convert this matrix to COOrdinate format. tocsc
(self[, copy])Convert this matrix to Compressed Sparse Column format. tocsr
(self[, copy])Convert this matrix to Compressed Sparse Row format. todense
(self[, order, out])Return a dense matrix representation of this matrix. todia
(self[, copy])Convert this matrix to sparse DIAgonal format. todok
(self[, copy])Convert this matrix to Dictionary Of Keys format. tolil
(self[, copy])Convert this matrix to LInked List format. transpose
(self[, axes, copy])Reverses the dimensions of the sparse matrix.