Sgp4Propagator.GetEvaluator Method (EvaluatorGroup)

Gets an evaluator that can propagate at individual dates.

This evaluator propagates the orbit state from InitialConditions around the Earth. The result of evaluating will be a Motion<Cartesian> containing the orbital position and velocity at the given JulianDate, expressed in the EarthCentralBody's TrueEquatorMeanEquinoxFrame.

Note: when evaluating, it will be more efficient to specify times using the TAI time standard, to avoid the need to convert in order to perform the propagation. The length of a time step may be different in different TimeStandards. So, be careful when specifying times.

Namespace: AGI.Foundation.Propagators
Assembly: AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 25.1.421.0 (25.1.421.0)

Syntax

C++

Copy

public override MotionEvaluator<Cartesian> GetEvaluator(
	EvaluatorGroup group
)

Public Overrides Function GetEvaluator ( 
	group As EvaluatorGroup
) As MotionEvaluator(Of Cartesian)

public:
virtual MotionEvaluator<Cartesian>^ GetEvaluator(
	EvaluatorGroup^ group
) override

abstract GetEvaluator : 
        group : EvaluatorGroup -> MotionEvaluator<Cartesian> 
override GetEvaluator : 
        group : EvaluatorGroup -> MotionEvaluator<Cartesian>

Parameters

group: Type: AGI.Foundation.EvaluatorGroup
The group with which to associate the new evaluator. By grouping evaluators that are often evaluated at the same Julian dates, common computations can be performed only once for the entire group instead of multiple times for each evaluator.

Return Value

Type: MotionEvaluator<Cartesian>
The evaluator.

Exceptions

Exception	Condition
ArgumentNullException	Thrown when the group is null.

Reference

Sgp4Propagator Class

GetEvaluator Overload

AGI.Foundation.Propagators Namespace

CartesianOnePointPropagator.CreatePoint()

Sgp4Propagator.AddLanguageSpecificTextSet("LSTA4D9D3D4_0?cpp=::|nu=.");GetEvaluator Method (EvaluatorGroup)

Parameters

Return Value

Reference

Sgp4Propagator.GetEvaluator Method (EvaluatorGroup)