public class Logistic extends Object implements UnivariateDifferentiableFunction, DifferentiableUnivariateFunction
| Modifier and Type | Class and Description |
|---|---|
static class |
Logistic.Parametric
Parametric function where the input array contains the parameters of
the
logistic function, ordered as follows:
k
m
b
q
a
n
|
| Constructor and Description |
|---|
Logistic(double k,
double m,
double b,
double q,
double a,
double n) |
| Modifier and Type | Method and Description |
|---|---|
UnivariateFunction |
derivative()
Deprecated.
as of 3.1, replaced by
value(DerivativeStructure) |
DerivativeStructure |
value(DerivativeStructure t)
Simple mathematical function.
|
double |
value(double x)
Compute the value of the function.
|
public Logistic(double k,
double m,
double b,
double q,
double a,
double n)
throws NotStrictlyPositiveException
k - If b > 0, value of the function for x going towards +∞.
If b < 0, value of the function for x going towards -∞.m - Abscissa of maximum growth.b - Growth rate.q - Parameter that affects the position of the curve along the
ordinate axis.a - If b > 0, value of the function for x going towards -∞.
If b < 0, value of the function for x going towards +∞.n - Parameter that affects near which asymptote the maximum
growth occurs.NotStrictlyPositiveException - if n <= 0.public double value(double x)
value in interface UnivariateFunctionx - Point at which the function value should be computed.@Deprecated public UnivariateFunction derivative()
value(DerivativeStructure)derivative in interface DifferentiableUnivariateFunctionpublic DerivativeStructure value(DerivativeStructure t)
UnivariateDifferentiableFunction classes compute both the
value and the first derivative of the function.
value in interface UnivariateDifferentiableFunctiont - function input valueCopyright © 2003–2016 The Apache Software Foundation. All rights reserved.