Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/fitting/SqrtErrorFunction.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 /** | |
| 13 * @author Gernot Belger | |
| 14 */ | |
| 15 final class SqrtErrorFunction { | |
| 16 | |
| 17 private final SQRTFunction sqrtFunction; | |
| 18 | |
| 19 private final TargetFunction targetFunction; | |
| 20 | |
| 21 public SqrtErrorFunction(final double[] obsWaterlevels, final TargetFunction targetFunction) { | |
| 22 | |
| 23 this.targetFunction = targetFunction; | |
| 24 this.sqrtFunction = new SQRTFunction(obsWaterlevels); | |
| 25 } | |
| 26 | |
| 27 public double value(final double a, final double b, final double m) { | |
| 28 return calc_sqrt_trans(a, b, m); | |
| 29 } | |
| 30 | |
| 31 private double calc_sqrt_trans(final double a, final double b, final double m) { | |
| 32 | |
| 33 final double[] waterlevels = this.targetFunction.calc_stages(a, b, m); | |
| 34 return this.sqrtFunction.calc_sqrt(waterlevels); | |
| 35 } | |
| 36 } |