CVXR (version 0.95)

Parameter-class: The Parameter class.

Description

This class represents a parameter, either scalar or a matrix.

Usage

Parameter(rows = 1, cols = 1, name = NA_character_, sign = UNKNOWN,
  value = NA_real_)
# S4 method for Parameter
as.character(x)
# S4 method for Parameter
get_data(object)
# S4 method for Parameter
name(object)
# S4 method for Parameter
size(object)
# S4 method for Parameter
is_positive(object)
# S4 method for Parameter
is_negative(object)
# S4 method for Parameter
grad(object)
# S4 method for Parameter
parameters(object)
# S4 method for Parameter
value(object)
# S4 method for Parameter
value(object) <- value
# S4 method for Parameter
canonicalize(object)

Arguments

rows

The number of rows in the parameter.

cols

The number of columns in the parameter.

name

(Optional) A character string representing the name of the parameter.

sign

(Optional) A character string indicating the sign of the parameter. Must be "ZERO", "POSITIVE", "NEGATIVE", or "UNKNOWN". Defaults to "UNKNOWN".

value

(Optional) A numeric element, vector, matrix, or data.frame. Defaults to NA and may be changed with value<- later.

x, object

A '>Parameter object.

Methods (by generic)

• get_data: Returns list(rows, cols, name, sign string, value).

• name: The name of the parameter.

• size: The c(rows, cols) dimensions of the parameter.

• is_positive: Is the parameter non-negative?

• is_negative: Is the parameter non-positive?

• grad: An empty list since the gradient of a parameter is zero.

• parameters: Returns itself as a parameter.

• value: The value of the parameter.

• value<-: Set the value of the parameter.

• canonicalize: The canonical form of the parameter.

Slots

id

(Internal) A unique integer identification number used internally.

rows

The number of rows in the parameter.

cols

The number of columns in the parameter.

name

(Optional) A character string representing the name of the parameter.

sign_str

A character string indicating the sign of the parameter. Must be "ZERO", "POSITIVE", "NEGATIVE", or "UNKNOWN".

value

(Optional) A numeric element, vector, matrix, or data.frame. Defaults to NA and may be changed with value<- later.

Examples

# NOT RUN {
x <- Parameter(3, name = "x0", sign="NEGATIVE") ## 3-vec negative
is_positive(x)
is_negative(x)
size(x)
# }