PartialDerivativesEvaluator Class

An interface for an evaluator that takes a JulianDate, order, and list of inputs and returns the partial derivatives of itself with respect to those inputs.

Inheritance Hierarchy

System.Object
  AGI.Foundation.Function<JulianDate, Matrix>
    AGI.Foundation.MotionEvaluator<Matrix>
      AGI.Foundation.Geometry.DynamicMatrixEvaluator
        AGI.Foundation.NumericalMethods.Advanced.PartialDerivativesEvaluator

Namespace: AGI.Foundation.NumericalMethods.Advanced
Assembly: AGI.Foundation.Core (in AGI.Foundation.Core.dll) Version: 25.1.421.0 (25.1.421.0)

Syntax

C++

Copy

public abstract class PartialDerivativesEvaluator : DynamicMatrixEvaluator

Public MustInherit Class PartialDerivativesEvaluator
	Inherits DynamicMatrixEvaluator

public ref class PartialDerivativesEvaluator abstract : public DynamicMatrixEvaluator

[<AbstractClassAttribute>]
type PartialDerivativesEvaluator =  
    class
        inherit DynamicMatrixEvaluator
    end

The PartialDerivativesEvaluator type exposes the following members.

Constructors

	Name	Description
	PartialDerivativesEvaluator(PartialDerivativesEvaluator, CopyContext)	Initializes a new instance as a copy of an existing instance.
	PartialDerivativesEvaluator(EvaluatorGroup, IList<IPartialDifferentiable>, IPartialDifferentiable, IList<IPartialDifferentiable>)	Initializes a new instance that will evaluate the partial derivatives of the given partialsOfIPartialDifferentiable with respect to the given withRespectTo list of IPartialDifferentiable. The RowDimension of this instance will be equal to the Dimension of partialsOf. The ColumnDimension of this instance will be equal to the summation of the Dimensions of objects in the withRespectTo list.

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Properties

	Name	Description
	AvailabilityIntervals	Gets a TimeIntervalCollection over which data is available. If the availability interval is infinite, this returns Infinite. (Inherited from MotionEvaluator<T>.)
	ColumnDimension	Gets the ColumnDimension of the Matrix object produced by the evaluation calls. (Inherited from DynamicMatrixEvaluator.)
	DependentVariable	Gets the IPartialDifferentiable identifying the object that the partial derivatives calculated during evaluation are of.
	Group	Gets the group that contains this evaluator. (Inherited from MotionEvaluator<T>.)
	IndependentVariables	Gets the list of IPartialDifferentiables identifying the objects that the partial derivatives calculated during evaluation are with respect to. As an optimization this is typically only the subset of the independentVariables provided to GetPartialDerivativesEvaluator(IList<IPartialDifferentiable> , EvaluatorGroup) for which the DependentVariable has non-zero partials, however a user-implemented PartialDerivativesEvaluator does not have to follow that pattern. This list of variables corresponds to the columns of the Matrix produced by Evaluate(JulianDate). Each IPartialDifferentiable in this list has a number of columns equal to its Dimension, and those column groupings follow the same order as this list. In addition, this list, while possible a subset of the independent variables specified by the user, will always be in the same order as that original list.
	IsThreadSafe	Gets a value indicating whether the methods on this instance are safe to call from multiple threads simultaneously. (Inherited from Function<TIndependent, TDependent>.)
	IsTimeVarying	Gets a value indicating whether or not the value of this evaluator changes with time. If false, the evaluator is assumed to return the same value for any input JulianDate. (Inherited from MotionEvaluator<T>.)
	RowDimension	Gets the RowDimension of the Matrix object produced by the evaluation calls. (Inherited from DynamicMatrixEvaluator.)

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Methods

	Name	Description
	Clone	Clones this object using the specified context. (Inherited from Function<TIndependent, TDependent>.)
	Dispose()	Releases any resources associated with this instance. (Inherited from Function<TIndependent, TDependent>.)
	Dispose(Boolean)	Releases any resources associated with this instance. (Inherited from Function<TIndependent, TDependent>.)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Evaluate(JulianDate)	Calls EvaluatePartialsOfChildren(JulianDate) to calculate the partials derivatives of DependentVariable with respect to all variables in IndependentVariables except for DependentVariable, and then adds on the terms for the partial derivatives of DependentVariable with respect to itself, if necessary. (Overrides MotionEvaluator<T>.Evaluate(JulianDate).)
	Evaluate(JulianDate, Int32)	PartialDerivativeEvaluators only calculate zeroth order values, this method returns a Motion<T> of order zero regardless of the requested order. (Overrides MotionEvaluator<T>.Evaluate(JulianDate, Int32).)
	Evaluate(TimeInterval, Duration, Int32)	Evaluates this evaluator at a specified fixed step over the specified interval. (Inherited from MotionEvaluator<T>.)
	Evaluate(JulianDate, JulianDate, Duration, Int32)	Evaluates this evaluator at a specified fixed step over the specified interval. (Inherited from MotionEvaluator<T>.)
	Evaluate(TimeInterval, Duration, Int32, ITrackCalculationProgress)	Evaluates this evaluator at a specified fixed step over the specified interval. (Inherited from MotionEvaluator<T>.)
	Evaluate(JulianDate, JulianDate, Duration, Int32, ITrackCalculationProgress)	Evaluates this evaluator at a specified fixed step over the specified interval. (Inherited from MotionEvaluator<T>.)
	EvaluateMotionWithoutOrder	Evaluates the function using a default order. (Inherited from MotionEvaluator<T>.)
	EvaluatePartialsOfChildren	Evaluates the partials derivatives of DependentVariable with respect to all variables in IndependentVariables except for DependentVariable, as that is taken care of by Evaluate(JulianDate).
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetAvailabilityIntervals	Gets the intervals over which data is available. (Inherited from MotionEvaluator<T>.)
	GetCachingWrapper	Gets a version of this evaluator that caches the previously computed value so that if it is evaluated twice at the same date the computation is done only once. (Overrides DynamicMatrixEvaluator.GetCachingWrapper().)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetNextSampleSuggestion	Gets a suggestion for the next independent variable value at which to sample this function. (Inherited from Function<TIndependent, TDependent>.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsAvailable	Determines if valid data is available for the given JulianDate. (Inherited from MotionEvaluator<T>.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	UpdateEvaluatorReferences	Updates the evaluator references held by this object using the reference-to-reference mapping in the specified CopyContext. (Inherited from MotionEvaluator<T>.)

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Reference

AGI.Foundation.NumericalMethods.Advanced Namespace