```
public class SplineFitter
extends java.lang.Object
```
This class interpolates a set of points using natural cubic splines (assuming zero second derivatives at end points). Given a set of knots x (all different and arranged in increasing order) and function values y at these positions, the class build the spline that can be evaluated at any point xp within the range of x. It is based on the publication Haysn Hornbeck "Fast Cubic Spline Interpolation" https://arxiv.org/abs/2001.09253 Implemented by Eugene Katrukha (katpyxa@gmail.com) to fit the layout of SplineFitter class of ImageJ

Constructors
Constructor	Description
`SplineFitter(float[] x, float[] y, int n)`
`SplineFitter(float[] x, float[] y, int n, boolean closed)`	For closed curves: the first and last y value should be identical; internally, a periodic continuation with a few will be used at both ends
`SplineFitter(int[] x, int[] y, int n)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`evalSpline(double xp)`	Evalutes spline function at given point
`double`	`evalSpline(float[] x, float[] y, int n, double xp)`
`double`	`evalSpline(int[] x, int[] y, int n, double xp)`	provides interpolated function value at position xp

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

public SplineFitter(int[] x,
                    int[] y,
                    int n)

public SplineFitter(float[] x,
                    float[] y,
                    int n)

evalSpline
```
public double evalSpline(double xp)
```
Evalutes spline function at given point

public double evalSpline(int[] x,
                         int[] y,
                         int n,
                         double xp)

provides interpolated function value at position xp

public double evalSpline(float[] x,
                         float[] y,
                         int n,
                         double xp)

Class SplineFitter