Java List Mean geometricMean(List vals, double replacement)

Description

Return the geometric mean of the absolute values of elements

License

Open Source License

Declaration

public static double geometricMean(List vals, double replacement) 

Method Source Code

//package com.java2s;
/*/*ww  w .  j  av a 2 s  . c om*/
**    Copyright (C) 2003-2018 Institute for Systems Biology 
**                            Seattle, Washington, USA. 
**
**    This library is free software; you can redistribute it and/or
**    modify it under the terms of the GNU Lesser General Public
**    License as published by the Free Software Foundation; either
**    version 2.1 of the License, or (at your option) any later version.
**
**    This library is distributed in the hope that it will be useful,
**    but WITHOUT ANY WARRANTY; without even the implied warranty of
**    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
**    Lesser General Public License for more details.
**
**    You should have received a copy of the GNU Lesser General Public
**    License along with this library; if not, write to the Free Software
**    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

import java.util.List;

public class Main {
    /***************************************************************************
    **
    ** Return the geometric mean of the absolute values of elements
    */

    public static double geometricMean(List vals, double replacement) {
        int numVals = vals.size();
        double product = 1.0;
        for (int i = 0; i < numVals; i++) {
            Double val = (Double) vals.get(i);
            double dval = (val.isNaN()) ? replacement : val.doubleValue();
            if (dval == 0.0) {
                dval = replacement;
            }
            product *= Math.abs(dval);
        }
        return (Math.pow(product, 1.0 / (double) numVals));
    }
}

Related

1. calculateStDev(List values, double mean)
2. computeMean(List fs)
3. getHMean(List harray)
4. getMean(List data)
5. getMean(List list)
6. getStandardDeviation(double meanValue, List values)