length_expr

Returns the index of the last nonzero element of a vector (1-based).
This atom is quasiconvex but NOT convex, so it can only be used in
DQCP problems (solved with <code>qcp = TRUE</code>).

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. This version uses the S7 object system for improved
performance and maintainability.

Anqi Fu

CVXR

Disciplined Convex Optimization

Balasubramanian Narasimhan

Steven Diamond

John Miller

Stephen Boyd

length_expr function

<dl><dt>x</dt>
<dd>A CVXR vector expression.</dd></dl>

Arguments

Length of a Vector (Last Nonzero Index) — length_expr

<dl>

<dt>x</dt>
<dd>A CVXR vector expression.</dd>

</dl>

length_expr: Length of a Vector (Last Nonzero Index)

Description

Usage

Value

Arguments

See Also