getModelCov

A function mostly for internal processing but can be used to extract either
the model covariance matrix (Cov) or the projection matrix for transformations made 
from the covariance matrix (Pcov), which is basically the square-root of 
the covariance matrix. This matrix is the model covariance used for estimation,
not the residual covariance matrix (see <code>getResCov</code>). 
There are also options for S3 or S4 format versions, or
a forcing of symmetry for Pcov.

utilities

Linear model calculations are made for many random versions of data.
Using residual randomization in a permutation procedure, sums of squares are
calculated over many permutations to generate empirical probability distributions
for evaluating model effects.  This packaged is described by
Collyer & Adams (2018).  Additionally, coefficients, statistics, fitted values, and residuals generated over many
permutations can be used for various procedures including pairwise tests, prediction, classification, and
model comparison.  This package should provide most tools one could need for the analysis of
high-dimensional data, especially in ecology and evolutionary biology, but certainly other fields, as well.

Michael Collyer

RRPP

Linear Model Evaluation with Randomized Residuals in a
Permutation Procedure

Dean Adams

getModelCov function

<dl><dt>fit</dt>
<dd>Object from <code>lm.rrpp</code></dd>
<dt>type</dt>
<dd>Whether the Cov or Pcov matrix is returned</dd>
<dt>format</dt>
<dd>Whether an S3 or S4 format is returned</dd>
<dt>forceSym</dt>
<dd>Logical value for whether a symmetric matrix should 
be returned for Pcov, even if Pcov was triangular as a solution.</dd></dl>

Arguments

Author

Utility Function for RRPP — getModelCov

<dl>

<dt>fit</dt>
<dd>Object from <code>lm.rrpp</code></dd>


<dt>type</dt>
<dd>Whether the Cov or Pcov matrix is returned</dd>


<dt>format</dt>
<dd>Whether an S3 or S4 format is returned</dd>


<dt>forceSym</dt>
<dd>Logical value for whether a symmetric matrix should 
be returned for Pcov, even if Pcov was triangular as a solution.</dd>

</dl>

getModelCov: Utility Function for RRPP

Description

Usage

Arguments

Author