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.
Methods
__len__()__mul__(other)interpret other and call one of the following
asformat(format[, copy])Return this matrix in the passed format.
asfptype()Upcast matrix to a floating point format (if necessary)
astype(dtype[, casting, copy])Cast the matrix elements to a specified type.
conj([copy])Element-wise complex conjugation.
conjugate([copy])Element-wise complex conjugation.
copy()Returns a copy of this matrix.
Number of non-zero entries, equivalent to
diagonal([k])Returns the kth diagonal of the matrix.
dot(other)Ordinary dot product
getH()Return the Hermitian transpose of this matrix.
Get shape of a matrix.
getcol(j)Returns a copy of column j of the matrix, as an (m x 1) sparse matrix (column vector).
Format of a matrix representation as a string.
Maximum number of elements to display when printed.
getnnz([axis])Number of stored values, including explicit zeros.
getrow(i)Returns a copy of row i of the matrix, as a (1 x n) sparse matrix (row vector).
maximum(other)Element-wise maximum between this and another matrix.
mean([axis, dtype, out])Compute the arithmetic mean along the specified axis.
minimum(other)Element-wise minimum between this and another matrix.
multiply(other)Point-wise multiplication by another matrix
nonzero()nonzero indices
power(n[, dtype])Element-wise power.
reshape(self, shape[, order, copy])Gives a new shape to a sparse matrix without changing its data.
resize(shape)Resize the matrix in-place to dimensions given by
shapeset_shape(shape)See
reshape.setdiag(values[, k])Set diagonal or off-diagonal elements of the array.
sum([axis, dtype, out])Sum the matrix elements over a given axis.
toarray([order, out])Return a dense ndarray representation of this matrix.
tobsr([blocksize, copy])Convert this matrix to Block Sparse Row format.
tocoo([copy])Convert this matrix to COOrdinate format.
tocsc([copy])Convert this matrix to Compressed Sparse Column format.
tocsr([copy])Convert this matrix to Compressed Sparse Row format.
todense([order, out])Return a dense matrix representation of this matrix.
todia([copy])Convert this matrix to sparse DIAgonal format.
todok([copy])Convert this matrix to Dictionary Of Keys format.
tolil([copy])Convert this matrix to List of Lists format.
transpose([axes, copy])Reverses the dimensions of the sparse matrix.