subst_value

Substitute a value in a system of linear (in)equations

Variable elimination (Gaussian elimination, Fourier-Motzkin elimination),
Moore-Penrose pseudoinverse, reduction to reduced row echelon form, value substitution,
projecting a vector on the convex polytope described by a system of (in)equations,
simplify systems by removing spurious columns and rows and collapse implied equalities,
test if a matrix is totally unimodular, compute variable ranges implied by linear
(in)equalities.

Mark der Loo

lintools

Manipulation of Linear Systems of (in)Equalities

Mark van der Loo

Edwin de Jonge

subst_value function

<dl><dt>A</dt>
<dd><code>[numeric]</code> matrix</dd>
<dt>b</dt>
<dd><code>[numeric]</code> vector</dd>
<dt>variables</dt>
<dd><code>[numeric|logical|character]</code> vector of column indices in <code>A</code></dd>
<dt>values</dt>
<dd><code>[numeric]</code> vecor of values to substitute.</dd>
<dt>remove_columns</dt>
<dd><code>[logical]</code> Remove spurious columns when substituting?</dd>
<dt>eps</dt>
<dd><code>[numeric]</code> scalar. Any value with absolute value below <code>eps</code> will be 
interpreted as zero.</dd></dl>

Arguments

Substitute a value in a system of linear (in)equations — subst_value

<dl>

<dt>A</dt>
<dd><code>[numeric]</code> matrix</dd>


<dt>b</dt>
<dd><code>[numeric]</code> vector</dd>


<dt>variables</dt>
<dd><code>[numeric|logical|character]</code> vector of column indices in <code>A</code></dd>


<dt>values</dt>
<dd><code>[numeric]</code> vecor of values to substitute.</dd>


<dt>remove_columns</dt>
<dd><code>[logical]</code> Remove spurious columns when substituting?</dd>


<dt>eps</dt>
<dd><code>[numeric]</code> scalar. Any value with absolute value below <code>eps</code> will be 
interpreted as zero.</dd>

</dl>

subst_value: Substitute a value in a system of linear (in)equations

Description

Usage

Value

Arguments

Details