Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/fitting/SQRTFunction.java @ 9646:0380717105ba
Implemented alternative fitting strategy for Log-Linear function.
| author | Gernot Belger <g.belger@bjoernsen.de> |
|---|---|
| date | Mon, 02 Dec 2019 17:56:15 +0100 |
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| 9645:eb1a29fe823f | 9646:0380717105ba |
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| 1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by | |
| 3 * Björnsen Beratende Ingenieure GmbH | |
| 4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt | |
| 5 * | |
| 6 * This file is Free Software under the GNU AGPL (>=v3) | |
| 7 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 8 * documentation coming with Dive4Elements River for details. | |
| 9 */ | |
| 10 package org.dive4elements.river.artifacts.model.fixings.fitting; | |
| 11 | |
| 12 import org.apache.commons.math3.stat.StatUtils; | |
| 13 | |
| 14 /** | |
| 15 * @author Gernot Belger | |
| 16 */ | |
| 17 final class SQRTFunction { | |
| 18 private final ArraySubstraction substraction; | |
| 19 | |
| 20 public SQRTFunction(final double[] observations) { | |
| 21 this.substraction = new ArraySubstraction(observations); | |
| 22 } | |
| 23 | |
| 24 public double calc_sqrt(final double[] values) { | |
| 25 | |
| 26 final double[] difference = this.substraction.evaluate(values); | |
| 27 | |
| 28 return StatUtils.sumSq(difference); | |
| 29 } | |
| 30 } |