updatePrec

Helper function for updating the precision matrices in the EMFA algorithm.

internal

Fast multi-trait and multi-trail Genome Wide Association Studies
(GWAS) following the method described in Zhou and Stephens. (2014),
<doi:10.1038/nmeth.2848>. One of a series of statistical genetic packages
for streamlining the analysis of typical plant breeding experiments
developed by Biometris.

Bart-Jan van Rossum

statgenQTLxT

Multi-Trait and Multi-Trial Genome Wide Association Studies

Willem Kruijer

Fred van Eeuwijk

Martin P Boer

Daniela Bustos-Korts

Emilie J Millet

Joao Paulo

Maikel Verouden

Ron Wehrens

Choazhi Zheng

updatePrec function

<dl><dt>m</dt>
<dd>An integer, the order of the model.</dd>
<dt>nc</dt>
<dd>An integer, the number of traits or genotypes.</dd>
<dt>omega</dt>
<dd>A computed matrix for the current step in the algoritm.</dd>
<dt>w</dt>
<dd>A model matrix for the current step in the algorithm.</dd>
<dt>p</dt>
<dd>A model matrix for the current step in the algorithm.</dd>
<dt>wNew</dt>
<dd>A pointer to the updated model matrix for w.</dd>
<dt>pNew</dt>
<dd>A pointer to the updated model matrix for p.</dd>
<dt>cNew</dt>
<dd>A pointer to the updated matrix c.</dd>
<dt>het</dt>
<dd>Should an extra diagonal part be added in the model for the
precision matrix.</dd>
<dt>maxDiag</dt>
<dd>A numerical value for the maximum value of sigma2.</dd></dl>

Arguments

Helper function for updating precision matrix. — updatePrec

<dl>

<dt>m</dt>
<dd>An integer, the order of the model.</dd>


<dt>nc</dt>
<dd>An integer, the number of traits or genotypes.</dd>


<dt>omega</dt>
<dd>A computed matrix for the current step in the algoritm.</dd>


<dt>w</dt>
<dd>A model matrix for the current step in the algorithm.</dd>


<dt>p</dt>
<dd>A model matrix for the current step in the algorithm.</dd>


<dt>wNew</dt>
<dd>A pointer to the updated model matrix for w.</dd>


<dt>pNew</dt>
<dd>A pointer to the updated model matrix for p.</dd>


<dt>cNew</dt>
<dd>A pointer to the updated matrix c.</dd>


<dt>het</dt>
<dd>Should an extra diagonal part be added in the model for the
precision matrix.</dd>


<dt>maxDiag</dt>
<dd>A numerical value for the maximum value of sigma2.</dd>

</dl>

Helper function for updating precision matrix.

updatePrec: Helper function for updating precision matrix.

Description

Usage

Arguments