Examples with SplineInterpolator org.hipparchus.analysis.interpolation.SplineInterpolator used on opensource projects

Example 1 with SplineInterpolator

use of org.hipparchus.analysis.interpolation.SplineInterpolator in project symja_android_library by axkr.

the class InterpolatingFunction method interpolateSpline.

private double interpolateSpline(RealMatrix matrix, double interpolationX) {
    int rowDim = matrix.getRowDimension();
    double[] x = new double[rowDim];
    double[] y = new double[rowDim];
    double[][] data = matrix.getData();
    for (int i = 0; i < rowDim; i++) {
        x[i] = data[i][0];
        y[i] = data[i][1];
    }
    UnivariateInterpolator interpolator = new SplineInterpolator();
    UnivariateFunction function = interpolator.interpolate(x, y);
    double interpolatedY = function.value(interpolationX);
    return interpolatedY;
}