nce.datasets

Class DataFit

java.lang.Object

nce.datasets.DataFit

public class DataFit
extends java.lang.Object

Service class for interpolation and extrapolation methods applicable to a couple of values in a data set.

Version:

20151118

Author:

Carlo Tegano

Constructor Summary

Constructors

Constructor and Description
DataFit()

Method Summary

Methods

Modifier and Type	Method and Description
static double	interpolateLinear(double[] x, double[] y) Interpolation between two data points with linear function
static double	interpolateLinear(double x1, double x2, double y1, double y2, double val) Interpolation between two data points with linear function
static double	interpolatePowerLaw(double[] x, double[] y) Interpolation between two data points with power law function of the form y = a * x^b
static double	interpolatePowerLaw(double x1, double x2, double y1, double y2, double val) Interpolation between two data points with power law function of the form y = a * x^b

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataFit

public DataFit()

Method Detail

interpolateLinear

public static double interpolateLinear(double[] x,
                       double[] y)

Interpolation between two data points with linear function

Parameters:

x - array of three elements [X1, X, X2]

y - array [Y1, Y, Y2]

Returns:

value of Y(X) by linear interpolation between (X1, Y1) and (X2, Y2)

interpolateLinear

public static double interpolateLinear(double x1,
                       double x2,
                       double y1,
                       double y2,
                       double val)

Interpolation between two data points with linear function

Parameters:

x1 -

x2 -

y1 -

y2 -

val - value of X at which to interpolate

Returns:

value of Y(X) by linear interpolation between (X1, Y1) and (X2, Y2)

interpolatePowerLaw

public static double interpolatePowerLaw(double[] x,
                         double[] y)

Interpolation between two data points with power law function of the form y = a * x^b

Parameters:

x - array of three elements [X1, X, X2]

y - array [Y1, Y, Y2]

Returns:

value of Y(X) by power law interpolation between (X1, Y1) and (X2, Y2)

interpolatePowerLaw

public static double interpolatePowerLaw(double x1,
                         double x2,
                         double y1,
                         double y2,
                         double val)

Interpolation between two data points with power law function of the form y = a * x^b

Parameters:

x1 -

x2 -

y1 -

y2 -

Returns:

value of Y(X) by power law interpolation between (X1, Y1) and (X2, Y2)