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NonlinearObjectiveFunctionNonAllocatingGetLowestParameterVariationToChangeFunctionValues Method

If a parameter is zero, it is hard to find the right order of magnitude for a variation of that parameter. Here, the variation is guessed by starting with the lowest possible variation, and increase the variation, until the function values deviate from the original value.

Namespace: Altaxo.Calc.Optimization.ObjectiveFunctions
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
Copy
public static double GetLowestParameterVariationToChangeFunctionValues(
	Func<Vector<double>, Vector<double>> EvaluateModelValues,
	Vector<double> currentValues,
	int idxParameter,
	Vector<double> parameters,
	Vector<double> h
)

Parameters

EvaluateModelValues  FuncVectorDouble, VectorDouble
Function that evaluate the model values. Argument are the parameters, result are the model values.
currentValues  VectorDouble
The current function values.
idxParameter  Int32
The index of the parameter for which to find a good guess for the variation.
parameters  VectorDouble
The parameters.
h  VectorDouble
A scratch array.

Return Value

Double
The lowest variation (increased in steps of 2), for which the function values deviate from the original values.
See Also