Parameter: Create a Parameter

In CVXR: Disciplined Convex Optimization

Create a Parameter

Description

Constructs a parameter whose numeric value can be changed without re-canonicalizing the problem. Parameters are treated as constants for DCP purposes but their value can be updated between solves.

Usage

Parameter(
  shape = c(1L, 1L),
  name = NULL,
  value = NULL,
  id = NULL,
  latex_name = NULL,
  ...
)

Arguments

shape	Integer vector of length 1 or 2 giving the parameter dimensions. A scalar n is interpreted as c(n, 1). Defaults to c(1, 1) (scalar).
name	Optional character string name. If NULL, an automatic name "param<id>" is generated.
value	Optional initial numeric value.
id	Optional integer ID.
latex_name	Optional character string giving a custom LaTeX name for use in visualizations. For example, "\\gamma". If NULL (default), visualizations auto-generate a LaTeX name.
...	Additional attributes: nonneg, nonpos, etc.

Value

A Parameter object (inherits from Leaf and Expression).

Examples

p <- Parameter()
value(p) <- 5
p_vec <- Parameter(3, nonneg = TRUE)
gamma <- Parameter(1, name = "gamma", latex_name = "\\gamma")

CVXR documentation built on March 6, 2026, 9:10 a.m.