OSOAarbitrary

The optimization is done with function <code>NeighbourcalcUniversal.R</code>

internal

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 (2022) "A unifying implementation of stratum (aka strong) orthogonal arrays" <http://www1.bht-berlin.de/FB_II/reports/Report-2022-002.pdf>.

Ulrike Groemping

SOAs

Creation of Stratum Orthogonal Arrays

Rob Carnell

OSOAarbitrary function

<dl><dt>oa</dt>
<dd>matrix (preferred) or data.frame</dd>
<dt>el</dt>
<dd>must be 2 or 3. <code>el=3</code>: Li et al; <code>el=2</code>: Zhou and Tang</dd>
<dt>m</dt>
<dd>desired number of columns. Defaults to the maximum possible.</dd>
<dt>permlist</dt>
<dd>a list of length m of lists of length 1 of permutations of the levels</dd>
<dt>random</dt>
<dd>a logical (a random draw of permutations is used if <code>permlist</code> is <code>NULL</code>)</dd></dl>

Arguments

Auxiliary function for optimized creation of OSOAs (function OSOAs)
using the Li et al. algorithm for arbitrary initial OA — OSOAarbitrary

<dl>

<dt>oa</dt>
<dd>matrix (preferred) or data.frame</dd>


<dt>el</dt>
<dd>must be 2 or 3. <code>el=3</code>: Li et al; <code>el=2</code>: Zhou and Tang</dd>


<dt>m</dt>
<dd>desired number of columns. Defaults to the maximum possible.</dd>


<dt>permlist</dt>
<dd>a list of length m of lists of length 1 of permutations of the levels</dd>


<dt>random</dt>
<dd>a logical (a random draw of permutations is used if <code>permlist</code> is <code>NULL</code>)</dd>

</dl>

OSOAarbitrary: Auxiliary function for optimized creation of OSOAs (function OSOAs) using the Li et al. algorithm for arbitrary initial OA

Description

Usage

Value

Arguments

References