| Package | Description | 
|---|---|
| org.apache.commons.math3.analysis.interpolation | Univariate real functions interpolation algorithms. | 
| org.apache.commons.math3.analysis.polynomials | Univariate real polynomials implementations, seen as differentiable
     univariate real functions. | 
| Modifier and Type | Method and Description | 
|---|---|
| PolynomialSplineFunction | LinearInterpolator. interpolate(double[] x,
           double[] y)Computes a linear interpolating function for the data set. | 
| PolynomialSplineFunction | AkimaSplineInterpolator. interpolate(double[] xvals,
           double[] yvals)Computes an interpolating function for the data set. | 
| PolynomialSplineFunction | SplineInterpolator. interpolate(double[] x,
           double[] y)Computes an interpolating function for the data set. | 
| PolynomialSplineFunction | LoessInterpolator. interpolate(double[] xval,
           double[] yval)Compute an interpolating function by performing a loess fit
 on the data at the original abscissae and then building a cubic spline
 with a
  SplineInterpolatoron the resulting fit. | 
| Modifier and Type | Method and Description | 
|---|---|
| PolynomialSplineFunction | PolynomialSplineFunction. polynomialSplineDerivative()Get the derivative of the polynomial spline function. | 
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