Example usage for org.apache.commons.math.analysis.interpolation LoessInterpolator interpolate

Introduction

In this page you can find the example usage for org.apache.commons.math.analysis.interpolation LoessInterpolator interpolate.

Prototype

public final PolynomialSplineFunction interpolate(final double[] xval, final double[] yval)
        throws MathException 

Source Link

Document

Compute an interpolating function by performing a loess fit on the data at the original abscissae and then building a cubic spline with a org.apache.commons.math.analysis.interpolation.SplineInterpolator on the resulting fit.

Usage

From source file:guineu.modules.filter.Alignment.SerumHuNormalization.SerumHuNormalizationTask.java

private PolynomialSplineFunction createCurve() {
    try {//from w  ww .j a  va2  s  .  com
        // if there are more than 2 points in the model
        LoessInterpolator loess = null;
        if (this.loessBandwidth == 0 && this.iterations == 0) {
            loess = new LoessInterpolator();
        } else {
            loess = new LoessInterpolator(this.loessBandwidth, this.iterations);
        }
        double[] newy = loess.smooth(xval, yval);
        PolynomialSplineFunction function = loess.interpolate(xval, newy);
        return function;

    } catch (MathException ex) {
        Logger.getLogger(SerumHuNormalizationTask.class.getName()).log(Level.SEVERE, null, ex);

        SplineInterpolator loess = new SplineInterpolator();
        PolynomialSplineFunction function = loess.interpolate(xval, yval);
        return function;

    }
}

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