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CVXR (version 1.0)

[,Expression,missing,missing,ANY-method: The Index class.

Description

This class represents indexing or slicing into a matrix.

Usage

# S4 method for Expression,missing,missing,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,numeric,missing,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,missing,numeric,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,numeric,numeric,ANY
[(x, i, j, ..., drop = TRUE)
Index(expr, key)
# S4 method for Index
to_numeric(object, values)
# S4 method for Index
dim_from_args(object)
# S4 method for Index
is_atom_log_log_convex(object)
# S4 method for Index
is_atom_log_log_concave(object)
# S4 method for Index
get_data(object)
# S4 method for Index
graph_implementation(object, arg_objs, dim, data = NA_real_)
# S4 method for SpecialIndex
to_numeric(object, values)
# S4 method for SpecialIndex
dim_from_args(object)

Arguments

x

A '>Expression object.

i, j

The row and column indices of the slice.

...

(Unimplemented) Optional arguments.

drop

(Unimplemented) A logical value indicating whether the result should be coerced to the lowest possible dimension.

expr

An '>Expression representing a vector or matrix.

key

A list containing the start index, end index, and step size of the slice.

object

An '>Index object.

values

A list of arguments to 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: The index/slice into the given value.

  • dim_from_args: The dimensions of the atom.

  • is_atom_log_log_convex: Is the atom log-log convex?

  • is_atom_log_log_concave: Is the atom log-log concave?

  • get_data: A list containing key.

  • graph_implementation: The graph implementation of the atom.

  • to_numeric: The index/slice into the given value.

  • dim_from_args: The dimensions of the atom.

Slots

expr

An '>Expression representing a vector or matrix.

key

A list containing the start index, end index, and step size of the slice.