parConstrainFun

Given a model object from <code>asreml</code> and a range of estimates of the
parameter, the function will supply the likelihood ratio test statistic for
the comparison of the full model to one where the parameter of interest is
constrained.

Constructs (non)additive genetic relationship matrices, and their
inverses, from a pedigree to be used in linear mixed effect models (A.K.A.
the 'animal model'). Also includes other functions to facilitate the use of
animal models. Some functions have been created to be used in conjunction
with the R package 'asreml' for the 'ASReml' software, which can be
obtained upon purchase from 'VSN' international
(<https://vsni.co.uk/software/asreml>).

Matthew Wolak

nadiv

(Non)Additive Genetic Relatedness Matrices

parConstrainFun function

<dl><dt>x</dt>
<dd>section of all parameter values to analyze</dd>
<dt>parameters</dt>
<dd>a value for which the log Likelihood of a model is to be
calculated</dd>
<dt>full</dt>
<dd>the full model <code>asreml</code> object</dd>
<dt>fm2</dt>
<dd>starting values for the full model</dd>
<dt>comp</dt>
<dd>which variance component to constrain</dd>
<dt>G</dt>
<dd>logical indicating if the component is part of the G structure</dd></dl>

Arguments

<a href="/link/matthewwolak%40gmail.com?package=nadiv&version=2.17.2" data-mini-rdoc="nadiv::matthewwolak@gmail.com">matthewwolak@gmail.com</a>

Author

Function used in the proLik function to produce a profile likelihood
for a variance component — parConstrainFun

<dl>

<dt>x</dt>
<dd>section of all parameter values to analyze</dd>


<dt>parameters</dt>
<dd>a value for which the log Likelihood of a model is to be
calculated</dd>


<dt>full</dt>
<dd>the full model <code>asreml</code> object</dd>


<dt>fm2</dt>
<dd>starting values for the full model</dd>


<dt>comp</dt>
<dd>which variance component to constrain</dd>


<dt>G</dt>
<dd>logical indicating if the component is part of the G structure</dd>

</dl>

<a href='mailto:matthewwolak@gmail.com'>matthewwolak@gmail.com</a>

parConstrainFun: Function used in the `proLik` function to produce a profile likelihood for a variance component

Description

Usage

Arguments

Author

Details

See Also