Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentDensity.java @ 6938:4c0222d94055

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issue1436: Exploit validity-rule of sedimentdensities.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 28 Aug 2013 12:02:56 +0200
parents 0a3dd5be6f81
children d4108d6c4000
rev   line source
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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2 * Software engineering by Intevation GmbH
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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3 *
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af13ceeba52a Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5863
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4 * This file is Free Software under the GNU AGPL (>=v3)
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5863
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6 * documentation coming with Dive4Elements River for details.
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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7 */
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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8
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bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5712
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9 package org.dive4elements.river.artifacts.model.minfo;
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10
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11 import java.util.ArrayList;
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12 import java.util.Collections;
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13 import java.util.HashMap;
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14 import java.util.List;
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15 import java.util.Map;
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16 import java.util.Set;
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17
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18 import org.apache.log4j.Logger;
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19
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20
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21 public class SedimentDensity
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22 {
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23 private static final Logger logger = Logger
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24 .getLogger(SedimentDensity.class);
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25
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26 private Map<Integer, List<SedimentDensityValue>> densities;
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27 private List<Integer> years;
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28
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29 public SedimentDensity() {
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30 this.densities = new HashMap<Integer, List<SedimentDensityValue>>();
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31 this.years = new ArrayList<Integer>();
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32 }
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33
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34 public Map<Integer, List<SedimentDensityValue>> getDensities() {
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35 return densities;
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36 }
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37
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38 public void setDensities(Map<Integer, List<SedimentDensityValue>> densities) {
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39 this.densities = densities;
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40 }
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41
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42 public void addDensity(double km, double density, int year) {
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43 logger.debug("adding " + year);
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44 if (this.densities.containsKey(year)) {
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45 List<SedimentDensityValue> list = this.densities.get(year);
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46 list.add(new SedimentDensityValue(km, density, year));
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47 }
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48 else {
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49 List<SedimentDensityValue> list =
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50 new ArrayList<SedimentDensityValue>();
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51 list.add(new SedimentDensityValue(km, density, year));
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52 densities.put(year, list);
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53 }
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54 if (!this.years.contains(new Integer(year))) {
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55 logger.debug("new year");
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56 years.add(new Integer(year));
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57 }
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58 }
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59
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60 public List<Integer> getYears() {
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61 return years;
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62 }
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63
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64 public void setYears(List<Integer> years) {
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65 this.years = years;
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66 }
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67
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0a3dd5be6f81 issue1436: Towards finding the best match in years for densities.
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parents: 6910
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68 /**
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69 * Get the density at year.
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70 * measured densities are valid until the next measurement.
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71 * if no measurement was found 1.8 is returned.
0a3dd5be6f81 issue1436: Towards finding the best match in years for densities.
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parents: 6910
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72 */
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73 public double getDensity(double km, int year) {
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74 Collections.sort(this.years);
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75 if (this.years.size() == 1 && years.get(0) <= year) {
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a58a1a520948 a bit of debug output
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76 logger.debug("get density from year " + year + " at km " + km);
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77 return getDensityAtKm(densities.get(years.get(0)), km);
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78 }
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79 else if (this.years.size() > 1) {
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80 for (int i = 0; i < years.size() -1; i++) {
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81 int y1 = years.get(i);
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82 int y2 = years.get(i + 1);
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4c0222d94055 issue1436: Exploit validity-rule of sedimentdensities.
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83 if (year >= y1 && year < y2) {
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84 return getDensityAtKm(densities.get(y1), km);
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85 }
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86 else if (year >= y2 && i == years.size() -1) {
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87 return getDensityAtKm(densities.get(y2), km);
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88 }
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89 }
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90 }
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91 return 1.8d;
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92 }
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93
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94 private double getDensityAtKm(
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95 List<SedimentDensityValue> values,
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96 double km
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97 ) {
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98 boolean found = false;
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99 SedimentDensityValue prev = null;
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100 SedimentDensityValue next = null;
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101 for (SedimentDensityValue sdv: values) {
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102 logger.debug("year: " + sdv.getYear());
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103 if (sdv.getKm() == km) {
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104 prev = sdv;
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105 found = true;
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106 break;
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107 }
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108 if (sdv.getKm() > km) {
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109 next = sdv;
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110 break;
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111 }
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112 prev = sdv;
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113 }
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114 if (found) {
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115 return prev.getDensity();
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116 }
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117 else {
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118 return spline(prev, next, km);
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119 }
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120 }
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121
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122 private double spline(
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123 SedimentDensityValue prev,
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124 SedimentDensityValue next,
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125 double km
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126 ) {
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127 double lower = prev.getKm();
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128 double upper = next.getKm();
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129 double upperDensity = next.getDensity();
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130 double lowerDensity = prev.getDensity();
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131
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132 double m =(upperDensity - lowerDensity)/(upper - lower) * km;
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133 double b = lowerDensity -
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134 ((upperDensity - lowerDensity)/(upper - lower) * lower);
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135 return (m * km) + b;
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136 }
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137
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138 public void cleanUp() {
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139 Set<Integer> keys = densities.keySet();
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140 for (Integer key : keys) {
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141 List<SedimentDensityValue> list = densities.get(key);
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142 if (list.size() == 0) {
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143 return;
71e6fe870c1d Added objects and factory for sediment densities.
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144 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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145 List<SedimentDensityValue> cleaned =
71e6fe870c1d Added objects and factory for sediment densities.
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146 new ArrayList<SedimentDensityValue>();
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147 double prevkm = list.get(0).getKm();
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Raimund Renkert <rrenkert@intevation.de>
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148 int counter = 0;
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149 double sum = 0d;
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150 for (SedimentDensityValue value : list) {
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151 if (value.getKm() == prevkm) {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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152 sum += value.getDensity();
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153 counter++;
71e6fe870c1d Added objects and factory for sediment densities.
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154 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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155 else {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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156 cleaned.add(new SedimentDensityValue(
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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157 prevkm,
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Raimund Renkert <rrenkert@intevation.de>
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158 sum / counter,
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Raimund Renkert <rrenkert@intevation.de>
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159 value.getYear()));
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160 sum = value.getDensity();
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161 counter = 1;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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162 }
71e6fe870c1d Added objects and factory for sediment densities.
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163 prevkm = value.getKm();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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164 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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165 this.densities.put(key, cleaned);
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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166 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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167 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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168 }
http://dive4elements.wald.intevation.org