dot-error_grad: Error Gradient (None for every variable)

.error_gradR Documentation

Error Gradient (None for every variable)

Description

Returns a list keyed by variable id with every entry NULL. Used by the chain-rule walker to propagate "could not compute" up the DAG when any argument value is missing.

Usage

.error_grad(expr)

Arguments

expr

An expression.

Details

Mirrors cvxpy/utilities/grad.py:error_grad.

Value

A list keyed by variable id (as character), each entry NULL.


CVXR documentation built on Oct. 19, 2026, 5:07 p.m.