Diff

An object-oriented modeling language for disciplined
convex programming (DCP) as described in Fu, Narasimhan, and Boyd
(2020, <doi:10.18637/jss.v094.i14>). It allows the user to
formulate convex optimization problems in a natural way following
mathematical convention and DCP rules. The system analyzes the
problem, verifies its convexity, converts it into a canonical
form, and hands it off to an appropriate solver to obtain the
solution. Interfaces to solvers on CRAN and elsewhere are
provided, both commercial and open source.

Anqi Fu

CVXR

Disciplined Convex Optimization

Balasubramanian Narasimhan

David W Kang

Steven Diamond

John Miller

Stephen Boyd

Paul Kunsberg Rosenfield

Diff function

<dl><dt>x</dt>
<dd>An Expression that represents a vector</dd>
<dt>lag</dt>
<dd>The degree of lag between differences</dd>
<dt>k</dt>
<dd>The integer value of the order of differences</dd>
<dt>axis</dt>
<dd>The axis along which to apply the function. For a 2D matrix, <code>1</code> indicates rows and <code>2</code> indicates columns.</dd></dl>

Arguments

Takes the k-th order differences — Diff

<dl>

<dt>x</dt>
<dd>An Expression that represents a vector</dd>


<dt>lag</dt>
<dd>The degree of lag between differences</dd>


<dt>k</dt>
<dd>The integer value of the order of differences</dd>


<dt>axis</dt>
<dd>The axis along which to apply the function. For a 2D matrix, <code>1</code> indicates rows and <code>2</code> indicates columns.</dd>

</dl>

Takes the k-th order differences

Diff: Takes the k-th order differences

Description

Usage

Value

Arguments