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CVXR (version 1.0-14)

[,Expression,index,missing,ANY-method: The SpecialIndex class.

Description

This class represents indexing using logical indexing or a list of indices into a matrix.

Usage

# S4 method for Expression,index,missing,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,missing,index,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,index,index,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,matrix,index,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,index,matrix,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,matrix,matrix,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for Expression,matrix,missing,ANY
[(x, i, j, ..., drop = TRUE)
SpecialIndex(expr, key)
# S4 method for SpecialIndex
name(x)
# S4 method for SpecialIndex
is_atom_log_log_convex(object)
# S4 method for SpecialIndex
is_atom_log_log_concave(object)
# S4 method for SpecialIndex
get_data(object)
# S4 method for SpecialIndex
.grad(object)

Arguments

x, object

An Index 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.

Methods (by generic)

  • name(SpecialIndex): Returns the index in string form.

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

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

  • get_data(SpecialIndex): A list containing key.

  • .grad(SpecialIndex): Gives the (sub/super)gradient of the atom w.r.t. each variable

Slots

expr

An Expression representing a vector or matrix.

key

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