Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    public static double[] calculateKcal(double[][] data, int samplesPerWindow) {

        double res[] = new double[2]; // holds V and H result
        double history[] = new double[3];
        double d[] = new double[3];
        double p[] = new double[3];

        // this is historical average of the past samples
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < samplesPerWindow; j++) {
                history[i] += data[i][j];
            }
            history[i] /= samplesPerWindow;
        }

        for (int j = 0; j < samplesPerWindow; j++) {

            for (int i = 0; i < 3; i++) {
                d[i] = history[i] - data[i][j];
            }

            double num = 0;
            double den = 0;
            double value = 0;
            for (int i = 0; i < 3; i++) {
                num = (d[0] * history[0] + d[1] * history[1] + d[2] * history[2]);
                den = (history[0] * history[0] + history[1] * history[1] + history[2] * history[2]);

                if (den == 0)
                    den = 0.01;
                value = (num / den) * history[i];
                p[i] = value;
            }

            double pMagn = p[0] * p[0] + p[1] * p[1] + p[2] * p[2];

            res[0] += Math.sqrt(pMagn);

            res[1] += Math.sqrt(
                    (d[0] - p[0]) * (d[0] - p[0]) + (d[1] - p[1]) * (d[1] - p[1]) + (d[2] - p[2]) * (d[2] - p[2]));
        }
        return res;
    }
}