scipy.linalg.hadamard¶
-
scipy.linalg.
hadamard
(n, dtype=<type 'int'>)[source]¶ Construct a Hadamard matrix.
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
New in version 0.8.0.
Examples
>>> from scipy.linalg import hadamard >>> hadamard(2, dtype=complex) array([[ 1.+0.j, 1.+0.j], [ 1.+0.j, -1.-0.j]]) >>> hadamard(4) array([[ 1, 1, 1, 1], [ 1, -1, 1, -1], [ 1, 1, -1, -1], [ 1, -1, -1, 1]])