Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java @ 642:2dbbb5be30a1

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Re-eanbled the calculation of the backjump correction. flys-artifacts/trunk@2026 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 27 May 2011 16:52:37 +0000
parents 663aa18bee7f
children 44175d4720f8
rev   line source
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.flys.artifacts.math;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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2
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3 import java.util.ArrayList;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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4 import java.util.List;
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5
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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6 import java.io.Serializable;
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7
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8 import org.apache.commons.math.analysis.interpolation.SplineInterpolator;
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9
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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10 import org.apache.commons.math.analysis.polynomials.PolynomialSplineFunction;
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11
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12 import org.apache.commons.math.ArgumentOutsideDomainException;
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13
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14 import org.apache.log4j.Logger;
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15
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16 public class BackJumpCorrector
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17 implements Serializable
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18 {
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19 private static Logger log = Logger.getLogger(BackJumpCorrector.class);
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20
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21 protected ArrayList<Double> backjumps;
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22
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23 protected double [] corrected;
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24
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25 public BackJumpCorrector() {
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26 backjumps = new ArrayList<Double>();
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27 }
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28
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29 public boolean hasBackJumps() {
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30 return !backjumps.isEmpty();
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31 }
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32
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33 public List<Double> getBackJumps() {
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34 return backjumps;
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35 }
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36
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37 public double [] getCorrected() {
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38 return corrected;
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39 }
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40
642
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41 public boolean doCorrection(double [] km, double [] ws) {
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42
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43 boolean wsUp = isIncreasing(ws);
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44
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45 if (wsUp) {
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46 km = swapClone(km);
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47 ws = swapClone(ws);
406
663aa18bee7f Back jump correction should work now for both flow directions.
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48 }
663aa18bee7f Back jump correction should work now for both flow directions.
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49
642
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50 boolean kmUp = isIncreasing(km);
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51
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52 if (!kmUp) {
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53 km = sumDiffs(km);
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54 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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55
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56 if (log.isDebugEnabled()) {
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57 log.debug("BackJumpCorrector.doCorrection ------- enter");
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58 log.debug(" km increasing: " + isIncreasing(km));
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59 log.debug(" ws increasing: " + isIncreasing(ws));
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60 log.debug("BackJumpCorrector.doCorrection ------- leave");
406
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61 }
663aa18bee7f Back jump correction should work now for both flow directions.
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62
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63 boolean hasBackJumps = doCorrectionClean(km, ws);
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64
642
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65 if (hasBackJumps && wsUp) {
406
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66 // mirror back
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67 swap(corrected);
406
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68 }
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69
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70 return hasBackJumps;
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71 }
663aa18bee7f Back jump correction should work now for both flow directions.
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72
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73 protected boolean doCorrectionClean(double [] km, double [] ws) {
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74 int N = km.length;
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75
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76 if (N != ws.length) {
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77 throw new IllegalArgumentException("km.length != ws.length");
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78 }
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79
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80 if (N < 2) {
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81 return false;
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82 }
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83
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84 SplineInterpolator interpolator = null;
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85
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86 for (int i = 1; i < N; ++i) {
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87 if (ws[i] <= ws[i-1]) {
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88 // no back jump
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89 continue;
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90 }
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91 backjumps.add(km[i]);
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92
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93 if (corrected == null) {
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94 // lazy cloning
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95 ws = corrected = (double [])ws.clone();
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96 }
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97
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parents:
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98 int back = i-2;
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99 double distance = Math.abs(km[i] - km[i-1]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
100 double rest = 0.0;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
101 double ikm = 0.0;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
102
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
103 while (back > -1) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
104 if (ws[back] < ws[i]) { // under water
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
105 // continue scanning backwards
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
106 distance += Math.abs(km[back+1] - km[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
107 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
108 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
109 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
110 if (ws[back] > ws[i]) { // over water
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
111 // need to calculate intersection
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
112 log.debug("intersection case");
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
113 double m = (km[back+1]-km[back])/(ws[back+1]-ws[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
114 double b = km[back]-ws[back]*m;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
115 ikm = m*ws[i] + b;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
116 distance += Math.abs(ikm - km[back+1]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
117 rest = Math.abs(km[back] - ikm);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
118 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
119 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
120 // equals height at ws[back]
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
121 log.debug("exact height match");
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
122 distance += Math.abs(km[back+1] - km[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
123 ikm = km[back];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
124 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
125 break;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
126 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
127
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
128 if (back < 0) {
642
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
129 //log.debug("run over left border");
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 // fill with same as ws[i]
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131 for (int j = 0; j < i; ++j) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 ws[j] = ws[i];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 double quarterDistance = 0.25*distance;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 // Now further seek back for the max height
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 double restDistance = Math.max(0.0, quarterDistance - rest);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144 double mkmw = ws[i];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 double mkm = km[0];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147 while (back > -1) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148 double d = Math.abs(km[back+1] - km[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 restDistance -= d;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150 if (restDistance > 0.0) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154 if (restDistance < 0.0) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 // need to calculate intersection
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 if (km[back] == km[back+1]) { // should not happen
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 mkm = km[back];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 mkmw = 0.5*(ws[back] + ws[back+1]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 double m = (ws[back+1]-ws[back])/(km[back+1]-km[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 double b = ws[back] - km[back]*m;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 mkm = km[back] + restDistance;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 mkmw = m*mkm + b;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 // exact match
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 mkm = km[back];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 mkmw = ws[back];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
171 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 break;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 double factor = back >= 0 && Math.abs(restDistance) < 1e-4
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 ? 1.0
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 : 1.0 - Math.min(1, Math.max(0, restDistance/quarterDistance));
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179 double ikmw = factor*0.25*(mkmw-ws[i]) + ws[i];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
180
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 double end = ikm + quarterDistance*factor;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 double [] x = { mkm, ikm, end };
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 double [] y = { mkmw, ikmw, ws[i] };
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 if (interpolator == null) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 interpolator = new SplineInterpolator();
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189
642
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
190 if (log.isDebugEnabled()) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
191 for (int j = 0; j < x.length; ++j) {
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diff changeset
192 log.debug(" " + x[j] + " -> " + y[j]);
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diff changeset
193 }
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diff changeset
194 }
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diff changeset
195
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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196 PolynomialSplineFunction spline = interpolator.interpolate(x, y);
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197
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198 try {
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199 if (log.isDebugEnabled()) {
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200 log.debug("spline points:");
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201 for (int j = 0; j < x.length; ++j) {
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202 log.debug(x[j] + " " + y[j] + " " + spline.value(x[j]));
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203 }
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204 }
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205
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206 for (back = Math.max(back, 0);
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207 back < i && km[back] < end;
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208 ++back
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209 ) {
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210 // to 3/4 point fill with spline values
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211 ws[back] = spline.value(km[back]);
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212 }
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213 while (back < i) {
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214 // fill the rest with ws[i]
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215 ws[back++] = ws[i];
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216 }
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217 }
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218 catch (ArgumentOutsideDomainException aode) {
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219 log.error("spline interpolation failed", aode);
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220 }
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221 } // for all km
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222
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223 return !backjumps.isEmpty();
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224 }
642
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diff changeset
225
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226 public static final boolean isIncreasing(double [] array) {
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227 int inc = 0;
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diff changeset
228 int dec = 0;
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229 int sweet = (array.length-1)/2;
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diff changeset
230 for (int i = 1; i < array.length; ++i) {
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parents: 406
diff changeset
231 if (array[i] > array[i-1]) {
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parents: 406
diff changeset
232 if (++inc > sweet) {
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diff changeset
233 return true;
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parents: 406
diff changeset
234 }
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parents: 406
diff changeset
235 }
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parents: 406
diff changeset
236 else if (++dec > sweet) {
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parents: 406
diff changeset
237 return false;
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parents: 406
diff changeset
238 }
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parents: 406
diff changeset
239 }
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parents: 406
diff changeset
240 return inc > sweet;
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diff changeset
241 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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diff changeset
242
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parents: 406
diff changeset
243 public static final double [] swap(double [] array) {
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parents: 406
diff changeset
244 int lo = 0;
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parents: 406
diff changeset
245 int hi = array.length-1;
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parents: 406
diff changeset
246 while (hi > lo) {
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parents: 406
diff changeset
247 double t = array[lo];
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diff changeset
248 array[lo] = array[hi];
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diff changeset
249 array[hi] = t;
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diff changeset
250 ++lo;
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parents: 406
diff changeset
251 --hi;
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parents: 406
diff changeset
252 }
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diff changeset
253
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
254 return array;
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parents: 406
diff changeset
255 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
256
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
257 public static final double [] swapClone(double [] array) {
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parents: 406
diff changeset
258 double [] out = new double[array.length];
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parents: 406
diff changeset
259 int lo = 0;
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diff changeset
260
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
261 int hi = array.length-1;
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parents: 406
diff changeset
262 while (hi > lo) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
263 out[lo] = array[hi];
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parents: 406
diff changeset
264 out[hi] = array[lo];
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parents: 406
diff changeset
265 ++lo;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
266 --hi;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
267 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
268 return out;
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parents: 406
diff changeset
269 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
270
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
271 public static final double [] sumDiffs(double [] in) {
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parents: 406
diff changeset
272 double [] out = new double[in.length];
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parents: 406
diff changeset
273
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
274 if (out.length > 0) {
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parents: 406
diff changeset
275 out[0] = 0d;
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parents: 406
diff changeset
276 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
277
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
278 for (int i = 1; i < out.length; ++i) {
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parents: 406
diff changeset
279 out[i] = out[i-1] + Math.abs(in[i-1] - in[i]);
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parents: 406
diff changeset
280 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
281
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
282 return out;
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parents: 406
diff changeset
283 }
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
284 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
285 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org