Example usage for org.apache.commons.math3.analysis.interpolation TrivariateGridInterpolator interpolate

Introduction

In this page you can find the example usage for org.apache.commons.math3.analysis.interpolation TrivariateGridInterpolator interpolate.

Prototype

TrivariateFunction interpolate(double[] xval, double[] yval, double[] zval, double[][][] fval)
        throws NoDataException, DimensionMismatchException;

Source Link

Document

Compute an interpolating function for the dataset.

Usage

From source file:com.gordoni.opal.TriInterpolator.java

public TriInterpolator(MapPeriod mp, int what) {
    this.mp = mp;

    Scenario scenario = mp.scenario;/*from w  w w.  ja  v a2s .  c  o m*/
    Config config = scenario.config;

    xval = new double[mp.length[0]];
    for (int i = 0; i < xval.length; i++)
        xval[(xval.length - 1) - i] = scenario.scale[0].bucket_to_pf(mp.bottom[0] + i);
    yval = new double[mp.length[1]];
    for (int i = 0; i < yval.length; i++)
        yval[(yval.length - 1) - i] = scenario.scale[1].bucket_to_pf(mp.bottom[1] + i);
    zval = new double[mp.length[2]];
    for (int i = 0; i < zval.length; i++)
        zval[(zval.length - 1) - i] = scenario.scale[2].bucket_to_pf(mp.bottom[2] + i);

    fval = new double[mp.length[0]][mp.length[1]][mp.length[2]];
    MapPeriodIterator<MapElement> mpitr = mp.iterator();
    while (mpitr.hasNext()) {
        int[] bucket = mpitr.nextIndex().clone();
        MapElement me = mpitr.next();
        int xindex = (xval.length - 1) - (bucket[0] - mp.bottom[0]);
        int yindex = (yval.length - 1) - (bucket[1] - mp.bottom[1]);
        int zindex = (zval.length - 1) - (bucket[2] - mp.bottom[2]);
        fval[xindex][yindex][zindex] = getWhat(me, what);
    }

    TrivariateGridInterpolator interpolator;
    if (config.interpolation3.equals("spline"))
        interpolator = new TricubicInterpolator();
    else {
        assert (false);
        return;
    }

    this.f = interpolator.interpolate(xval, yval, zval, fval);
}

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