area.math.nm.lib.Interpolation.java Source code

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Here is the source code for area.math.nm.lib.Interpolation.java

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package area.math.nm.lib;

import org.apache.commons.math3.analysis.UnivariateFunction;
import org.apache.commons.math3.analysis.interpolation.SplineInterpolator;
import org.apache.commons.math3.analysis.interpolation.UnivariateInterpolator;

/**
 *
 * @author Vaibhav Jain
 */
public class Interpolation {

    public Interpolation() {
    }

    public String splineInterpolation(double x[], double y[], double input) {
        UnivariateInterpolator interpolator = new SplineInterpolator();
        UnivariateFunction function = interpolator.interpolate(x, y);
        double interpolationX = input;
        double interpolatedY = function.value(input);
        System.out.println("f(" + interpolationX + ") = " + interpolatedY);
        String result = new String(Double.toString(interpolatedY));
        return (result);
    }

    public UnivariateFunction splinePlot(double x[], double y[]) {
        UnivariateInterpolator interpolator = new SplineInterpolator();
        UnivariateFunction function = interpolator.interpolate(x, y);
        return (function);
    }

}