lotriAsExpression

Change a matrix or lotri matrix to a lotri expression

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

lotriAsExpression function

<dl><dt>x</dt>
<dd>matrix</dd>
<dt>useIni</dt>
<dd>use the ini block</dd>
<dt>plusNames</dt>
<dd>logical, when `TRUE` use the `a + b ~ c(1, 0.1,
1)` naming convention. Otherwise use the lotri single line
convention `a ~ 1; b ~ c(0.1, 1)`</dd>
<dt>nameEst</dt>
<dd>logical or integerish. When logical `TRUE` will add
names to all matrix estimates and `TRUE` when using the lotri
single line convention i.e. `a~c(a=1); b~c(a=0.1, b=1)`. When an
integer, the dimension of the matrix being displayed needs to
have a dimension above this number before names are displayed.</dd></dl>

Arguments

Change a matrix or lotri matrix to a lotri expression — lotriAsExpression

<dl>

<dt>x</dt>
<dd>matrix</dd>


<dt>useIni</dt>
<dd>use the ini block</dd>


<dt>plusNames</dt>
<dd>logical, when `TRUE` use the `a + b ~ c(1, 0.1,
1)` naming convention. Otherwise use the lotri single line
convention `a ~ 1; b ~ c(0.1, 1)`</dd>


<dt>nameEst</dt>
<dd>logical or integerish. When logical `TRUE` will add
names to all matrix estimates and `TRUE` when using the lotri
single line convention i.e. `a~c(a=1); b~c(a=0.1, b=1)`. When an
integer, the dimension of the matrix being displayed needs to
have a dimension above this number before names are displayed.</dd>

</dl>

lotriAsExpression: Change a matrix or lotri matrix to a lotri expression

Description

Usage

Arguments