as.lotri

as.lotri.matrix

as.lotri.data.frame

as.lotri.default

Provides a simple mechanism to specify a symmetric block
diagonal matrices (often used for covariance matrices).  This is based
on the domain specific language implemented in 'nlmixr2' but expanded
to create matrices in R generally instead of specifying parts of
matrices to estimate. It has expanded to include some matrix manipulation
functions that are generally useful for 'rxode2' and 'nlmixr2'.

Matthew Fidler

lotri

A Simple Way to Specify Symmetric, Block Diagonal Matrices

Matthew L. Fidler

Bill Denney

as.lotri function

<dl><dt>x</dt>
<dd>Matrix or other data frame</dd>
<dt>...</dt>
<dd>Other factors</dd>
<dt>default</dt>
<dd>Is the default factor when no conditioning is
implemented.</dd></dl>

Arguments

Author

As lower triangular matrix — as.lotri

<dl>

<dt>x</dt>
<dd>Matrix or other data frame</dd>


<dt>...</dt>
<dd>Other factors</dd>


<dt>default</dt>
<dd>Is the default factor when no conditioning is
implemented.</dd>

</dl>

As lower triangular matrix

as.lotri: As lower triangular matrix

Description

Usage

Value

Arguments

Author