Description Usage Arguments Details Value Source References Examples
View source: R/had_goethals_Turyn.R
had_goethals_Turyn performs the Hadamard Matrix from Goethals-Seidel method by using Turyn sequences.
1 |
r |
integer (order of the matrix) |
This function construct Hadamard matrix of given order using Turyn sequences. If Turyn sequences of length 2n-1, 2n-1, n, n is available then Turyn sequences are converted in T sequences of length 2n+p, 2n+p, 2n+p, 2n+p and p=n-1, these T sequences are used for construction of Hadamard matrix. If the given order of the the Turyn sequences are not available it returns NULL.
Turyn type-sequences are available for 28,30,34,36 in the internal dataset.
Hadamard matrix of order r
The Base sequences were obtained from Christos Koukouvinos
Goethals, J. M. and Seidel, J. J. (1967). Orthogonal matrices with zero diagnol. Canad. J. Math., 19, 259-264.
1 2 3 | #Big matrices
had_goethals_Turyn(356)
had_goethals_Turyn(404)
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