| NMathFunctionsFiveParameterLogistic Method |
Computes the 5-parameter logistic (5PL) function, using the given vector of function parameters,
at the specified point.
Namespace: CenterSpace.NMath.CoreAssembly: NMath (in NMath.dll) Version: 7.4
Syntax public static double FiveParameterLogistic(
DoubleVector p,
double x
)
Public Shared Function FiveParameterLogistic (
p As DoubleVector,
x As Double
) As Double
public:
static double FiveParameterLogistic(
DoubleVector^ p,
double x
)
static member FiveParameterLogistic :
p : DoubleVector *
x : float -> float
Parameters
- p DoubleVector
- The function parameters.
- x Double
- The point at which to evaluate the function.
Return Value
DoubleThe value of the function evaluated at x.
Exceptions 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.
See Also