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CVXR

DivExpression-class

The DivExpression class.

Description

This class represents one expression divided by another expression.

Usage

## S4 method for signature 'Expression,Expression'
e1 / e2

## S4 method for signature 'Expression,ConstVal'
e1 / e2

## S4 method for signature 'ConstVal,Expression'
e1 / e2

## S4 method for signature 'DivExpression'
to_numeric(object, values)

## S4 method for signature 'DivExpression'
is_quadratic(object)

## S4 method for signature 'DivExpression'
is_qpwa(object)

## S4 method for signature 'DivExpression'
dim_from_args(object)

## S4 method for signature 'DivExpression'
is_atom_convex(object)

## S4 method for signature 'DivExpression'
is_atom_concave(object)

## S4 method for signature 'DivExpression'
is_atom_log_log_convex(object)

## S4 method for signature 'DivExpression'
is_atom_log_log_concave(object)

## S4 method for signature 'DivExpression'
is_incr(object, idx)

## S4 method for signature 'DivExpression'
is_decr(object, idx)

## S4 method for signature 'DivExpression'
graph_implementation(object, arg_objs, dim, data = NA_real_)

Arguments

e1, e2

The Expression objects or numeric constants to divide. The denominator, e2, must be a scalar constant.
object

A DivExpression object.
values

A list of arguments to the atom.
idx

An index into the atom.
arg_objs

A list of linear expressions for each argument.
dim

A vector representing the dimensions of the resulting expression.
data

A list of additional data required by the atom.

Methods (by generic)

  • to_numeric: Matrix division by a scalar.

  • is_quadratic: Is the left-hand expression quadratic and the right-hand expression constant?

  • is_qpwa: Is the expression quadratic of piecewise affine?

  • dim_from_args: The (row, col) dimensions of the left-hand expression.

  • is_atom_convex: Division is convex (affine) in its arguments only if the denominator is constant.

  • is_atom_concave: Division is concave (affine) in its arguments only if the denominator is constant.

  • is_atom_log_log_convex: Is the atom log-log convex?

  • is_atom_log_log_concave: Is the atom log-log concave?

  • is_incr: Is the right-hand expression positive?

  • is_decr: Is the right-hand expression negative?

  • graph_implementation: The graph implementation of the expression.

CVXR

Disciplined Convex Optimization

v1.0-10
Apache License 2.0 | file LICENSE
Authors
Anqi Fu [aut, cre], Balasubramanian Narasimhan [aut], David W Kang [aut], Steven Diamond [aut], John Miller [aut], Stephen Boyd [ctb], Paul Kunsberg Rosenfield [ctb]
Initial release

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