cdn_baumert {HadamardR}

cdn_baumert

Description

Checks Hadamard Matrix can be constructed using Baumert-Hall arrays of order 12.

Usage

cdn_baumert(order)

Arguments

order

integer, order of Hadamard matrix to be checked.

Details

Baumert-Hall array is a generalization of Williamson Array. In case, Williamson matrices are available for order/12, the method return 6 otherwise it returns NULL.

The availabile Williamson sequences in the internal data sets is seq(1,63, 2) except 15, 35, 47, 53, 59 in the internal table.

Value

6 or NULL

References

Hedayat, A. and Wallis, W. D.(1978). Hadamard Matrices and Their Applications. Ann. Stat. 6: 1184-1238.

See Also

had_baumert for Baumert-Hall's construction method.

Examples

cdn_baumert(36)
#6
cdn_baumert(72)
#NULL