bundles / scipy 2.0.0.dev0+git20260907.41eeb59 / scipy / linalg / _special_matrices / hadamard

function

`scipy.linalg._special_matrices:hadamard`

source: build-install/usr/lib/python3.14/site-packages/scipy/linalg/_special_matrices.py:222

Signature

def hadamard(n, dtype = <class 'int'>)

Summary

Construct a Hadamard matrix.

Extended Summary

Constructs an n-by-n Hadamard matrix, using Sylvester's construction. n must be a power of 2.

Parameters

n : int: The order of the matrix. n must be a power of 2.
dtype : dtype, optional: The data type of the array to be constructed.

Returns

H : (n, n) ndarray: The Hadamard matrix.

Notes

Examples

from scipy.linalg import hadamard
hadamard(2, dtype=complex)
hadamard(4)

✓

array([[ 1,  1,  1,  1],
       [ 1, -1,  1, -1],
       [ 1,  1, -1, -1],
       [ 1, -1, -1,  1]])

Aliases

scipy.linalg.hadamard