template.class_template.SymmetryOrbitEQN.costgrad
- SymmetryOrbitEQN.costgrad(eqn, **kwargs)[source]
Gradient of cost function; optional unless cost was defined
- Parameters:
- eqnOrbit
Orbit instance whose state is an evaluation of the governing equations
- kwargsdict
extra arguments for rmatvec method.
- Returns:
- gradient
An Orbit instance whose state and parameters (i.e. orbit_vector) contain gradient information.