Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java @ 649:44175d4720f8

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Fix crashes in back jump correction. flys-artifacts/trunk@2038 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 01 Jun 2011 09:57:22 +0000
parents 2dbbb5be30a1
children 60f24fca574a
rev   line source
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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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;
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4 import java.util.List;
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5
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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
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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
649
44175d4720f8 Fix crashes in back jump correction.
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14 import org.apache.commons.math.exception.MathIllegalArgumentException;
44175d4720f8 Fix crashes in back jump correction.
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15
343
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16 import org.apache.log4j.Logger;
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17
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18 public class BackJumpCorrector
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19 implements Serializable
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20 {
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21 private static Logger log = Logger.getLogger(BackJumpCorrector.class);
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22
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23 protected ArrayList<Double> backjumps;
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24
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25 protected double [] corrected;
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26
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27 public BackJumpCorrector() {
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28 backjumps = new ArrayList<Double>();
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29 }
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30
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31 public boolean hasBackJumps() {
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32 return !backjumps.isEmpty();
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33 }
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34
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35 public List<Double> getBackJumps() {
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36 return backjumps;
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37 }
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38
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39 public double [] getCorrected() {
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40 return corrected;
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41 }
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42
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43 public boolean doCorrection(double [] km, double [] ws) {
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44
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45 boolean wsUp = isIncreasing(ws);
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46
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47 if (wsUp) {
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48 km = swapClone(km);
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49 ws = swapClone(ws);
406
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50 }
663aa18bee7f Back jump correction should work now for both flow directions.
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51
642
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52 boolean kmUp = isIncreasing(km);
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53
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54 if (!kmUp) {
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55 km = sumDiffs(km);
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56 }
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57
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58 if (log.isDebugEnabled()) {
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59 log.debug("BackJumpCorrector.doCorrection ------- enter");
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60 log.debug(" km increasing: " + isIncreasing(km));
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61 log.debug(" ws increasing: " + isIncreasing(ws));
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62 log.debug("BackJumpCorrector.doCorrection ------- leave");
406
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63 }
663aa18bee7f Back jump correction should work now for both flow directions.
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64
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65 boolean hasBackJumps = doCorrectionClean(km, ws);
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66
642
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67 if (hasBackJumps && wsUp) {
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68 // mirror back
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69 swap(corrected);
406
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70 }
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71
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72 return hasBackJumps;
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73 }
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74
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75 protected boolean doCorrectionClean(double [] km, double [] ws) {
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76 int N = km.length;
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77
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78 if (N != ws.length) {
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79 throw new IllegalArgumentException("km.length != ws.length");
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80 }
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81
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82 if (N < 2) {
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83 return false;
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84 }
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85
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86 SplineInterpolator interpolator = null;
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87
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88 for (int i = 1; i < N; ++i) {
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89 if (ws[i] <= ws[i-1]) {
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90 // no back jump
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91 continue;
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92 }
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93 backjumps.add(km[i]);
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94
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95 if (corrected == null) {
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96 // lazy cloning
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97 ws = corrected = (double [])ws.clone();
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98 }
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99
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diff changeset
100 int back = i-2;
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 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
102 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
103 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
104
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
105 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
106 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
107 // 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
108 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
109 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
110 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
111 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
112 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
113 // 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
114 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
115 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
116 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
117 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
118 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
119 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
120 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
121 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
122 // 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
123 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
124 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
125 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
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 break;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
128 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
129
649
44175d4720f8 Fix crashes in back jump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 642
diff changeset
130 if (back <= 0) {
642
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
131 //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
132 // 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
133 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
134 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
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 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 }
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 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
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 // 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
142
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143 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
144 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146 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
147 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
148
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 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
150 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
151 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
152 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
153 --back;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154 continue;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 }
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 (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
157 // 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
158 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
159 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
160 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
161 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 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
164 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
165 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
166 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
167 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 else {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 // 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
171 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
172 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
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 break;
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 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
178 ? 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
179 : 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
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 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
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 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
184
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185 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
186 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
187
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 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
189 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
190 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191
642
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
192 if (log.isDebugEnabled()) {
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parents: 406
diff changeset
193 for (int j = 0; j < x.length; ++j) {
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parents: 406
diff changeset
194 log.debug(" " + x[j] + " -> " + y[j]);
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diff changeset
195 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
196 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
197
649
44175d4720f8 Fix crashes in back jump correction.
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diff changeset
198 PolynomialSplineFunction spline;
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199
44175d4720f8 Fix crashes in back jump correction.
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diff changeset
200 try {
44175d4720f8 Fix crashes in back jump correction.
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diff changeset
201 spline = interpolator.interpolate(x, y);
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202 }
44175d4720f8 Fix crashes in back jump correction.
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parents: 642
diff changeset
203 catch (MathIllegalArgumentException miae) {
44175d4720f8 Fix crashes in back jump correction.
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parents: 642
diff changeset
204 log.error(miae);
44175d4720f8 Fix crashes in back jump correction.
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parents: 642
diff changeset
205 continue;
44175d4720f8 Fix crashes in back jump correction.
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parents: 642
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206 }
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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207
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diff changeset
208 try {
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parents:
diff changeset
209 if (log.isDebugEnabled()) {
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210 log.debug("spline points:");
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diff changeset
211 for (int j = 0; j < x.length; ++j) {
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212 log.debug(x[j] + " " + y[j] + " " + spline.value(x[j]));
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213 }
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214 }
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parents:
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215
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parents:
diff changeset
216 for (back = Math.max(back, 0);
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diff changeset
217 back < i && km[back] < end;
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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218 ++back
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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219 ) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
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220 // to 3/4 point fill with spline values
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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diff changeset
221 ws[back] = spline.value(km[back]);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
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222 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
223 while (back < i) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
224 // fill the rest with ws[i]
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
225 ws[back++] = ws[i];
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
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226 }
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parents:
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227 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
228 catch (ArgumentOutsideDomainException aode) {
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
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229 log.error("spline interpolation failed", aode);
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
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230 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
231 } // for all km
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parents:
diff changeset
232
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
233 return !backjumps.isEmpty();
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
234 }
642
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
235
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
236 public static final boolean isIncreasing(double [] array) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
237 int inc = 0;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
238 int dec = 0;
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parents: 406
diff changeset
239 int sweet = (array.length-1)/2;
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parents: 406
diff changeset
240 for (int i = 1; i < array.length; ++i) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
241 if (array[i] > array[i-1]) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
242 if (++inc > sweet) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
243 return true;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
244 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
245 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
246 else if (++dec > sweet) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
247 return false;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
248 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
249 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
250 return inc > sweet;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
251 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
252
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
253 public static final double [] swap(double [] array) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
254 int lo = 0;
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parents: 406
diff changeset
255 int hi = array.length-1;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
256 while (hi > lo) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
257 double t = array[lo];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
258 array[lo] = array[hi];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
259 array[hi] = t;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
260 ++lo;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
261 --hi;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
262 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
263
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
264 return array;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
265 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
266
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
267 public static final double [] swapClone(double [] array) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
268 double [] out = new double[array.length];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
269 int lo = 0;
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.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
271 int hi = array.length-1;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
272 while (hi > lo) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
273 out[lo] = array[hi];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
274 out[hi] = array[lo];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
275 ++lo;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
276 --hi;
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.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
278 return out;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
279 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
280
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
281 public static final double [] sumDiffs(double [] in) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
282 double [] out = new double[in.length];
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
283
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
284 if (out.length > 0) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
285 out[0] = 0d;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
286 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
287
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
288 for (int i = 1; i < out.length; ++i) {
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
289 out[i] = out[i-1] + Math.abs(in[i-1] - in[i]);
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
290 }
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
291
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 406
diff changeset
292 return out;
2dbbb5be30a1 Re-eanbled the calculation of the backjump correction.
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parents: 406
diff changeset
293 }
343
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
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parents:
diff changeset
294 }
f165c7d5d6db Implementation of the "Ruecksprungkorrektur" to be done in "W fuer angepassten Abflusslaengschnitt".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
295 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org