This class represents the extraction of the diagonal from a square matrix.

DiagMat(expr)

# S4 method for DiagMat
to_numeric(object, values)

# S4 method for DiagMat
dim_from_args(object)

# S4 method for DiagMat
is_atom_log_log_convex(object)

# S4 method for DiagMat
is_atom_log_log_concave(object)

# S4 method for DiagMat
graph_implementation(object, arg_objs, dim, data = NA_real_)

## Arguments

expr

An Expression representing the matrix whose diagonal we are interested in.

object

A DiagMat 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(DiagMat): Extract the diagonal from a square matrix constant.

• dim_from_args(DiagMat): The size of the atom.

• is_atom_log_log_convex(DiagMat): Is the atom log-log convex?

• is_atom_log_log_concave(DiagMat): Is the atom log-log concave?

• graph_implementation(DiagMat): The graph implementation of the atom.

## Slots

expr

An Expression representing the matrix whose diagonal we are interested in.