SOAs: Creation of Stratum Orthogonal Arrays

Creates stratum orthogonal arrays (also known as strong orthogonal arrays). These are arrays with more levels per column than the typical orthogonal array, and whose low order projections behave like orthogonal arrays, when collapsing levels to coarser strata. Details are described in Groemping (2021) "A unified implementation of stratum (aka strong) orthogonal arrays" <>.

Version: 1.0-1
Depends: R (≥ 3.6.0), DoE.base (≥ 1.2)
Imports: stats, combinat, FrF2, igraph, lhs (≥ 1.1.3),
Suggests: testthat (≥ 3.0.0)
Published: 2021-12-16
Author: Ulrike Groemping [aut, cre], Rob Carnell [ctb]
Maintainer: Ulrike Groemping <ulrike.groemping at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: NEWS
CRAN checks: SOAs results


Reference manual: SOAs.pdf


Package source: SOAs_1.0-1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): SOAs_1.0-1.tgz, r-release (x86_64): SOAs_1.0-1.tgz, r-oldrel: SOAs_1.0-1.tgz


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