NMathFunctionsFiveParameterLogisticFtnEvaluate(DoubleVector, Double) Method

Evaluates the five parameter logistic function for the given parameter values at the given point.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

public override double Evaluate(
	DoubleVector parameters,
	double x
)

Public Overrides Function Evaluate ( 
	parameters As DoubleVector,
	x As Double
) As Double

public:
virtual double Evaluate(
	DoubleVector^ parameters, 
	double x
) override

abstract Evaluate : 
        parameters : DoubleVector * 
        x : float -> float 
override Evaluate : 
        parameters : DoubleVector * 
        x : float -> float

Parameters

parameters DoubleVector: The parameter values.
x Double: The point to evaluate the function at.

Return Value

Double
The function value for the given parameter values at the the given point.

Remarks

5PL is an extension of 4PL with an additional parameter controlling the degree of asymmetry of the curve:

f(x) = p3 + (p0-p3)/(1 + (x/p2)^p1)^p4

, where p0 is the value at 0, p1 is the slope factor, p2 is the mid-range value, p3 is the value at infinity, and p4 is the asymmetry factor.

Reference

NMathFunctionsFiveParameterLogisticFtn Class

Evaluate Overload

CenterSpace.NMath.Core Namespace