Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentDensity.java @ 5863:4897a58c8746

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River artifacts: Added new copyright headers.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:40:59 +0200
parents 5aa05a7a34b7
children af13ceeba52a
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
diff changeset
2 * Software engineering by Intevation GmbH
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
3 *
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
4 * This file is Free Software under the GNU AGPL (>=v3)
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
6 * documentation coming with Dive4Elements River for details.
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
7 */
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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8
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5712
diff changeset
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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68 public double getDensity(double km, int year) {
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69 Collections.sort(this.years);
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70 if (this.years.size() == 1) {
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71 return getDensityAtKm(densities.get(year), km);
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72 }
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73 else {
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74 for (int i = 0; i < years.size() -1; i++) {
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75 int y1 = years.get(i);
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76 int y2 = years.get(i + 1);
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77 int mid = Math.round((y1 + y2) / 2);
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78 if (year < mid) {
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79 return getDensityAtKm(densities.get(y1), km);
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80 }
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81 else if (i == years.size() -1) {
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82 continue;
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83 }
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84 else {
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85 return getDensityAtKm(densities.get(y2), km);
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86 }
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87 }
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88 }
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89 return 1.8d;
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90 }
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91
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92 private double getDensityAtKm(
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93 List<SedimentDensityValue> values,
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94 double km
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95 ) {
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96 boolean found = true;
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97 SedimentDensityValue prev = null;
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98 SedimentDensityValue next = null;
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99 for (SedimentDensityValue sdv: values) {
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100 logger.debug("year: " + sdv.getYear());
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101 if (sdv.getKm() == km) {
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102 prev = sdv;
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103 found = true;
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104 break;
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105 }
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106 if (sdv.getKm() > km) {
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107 next = sdv;
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108 break;
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109 }
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110 prev = sdv;
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111 }
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112 if (found) {
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113 return prev.getDensity();
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114 }
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115 else {
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116 return spline(prev, next, km);
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117 }
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118 }
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119
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120 private double spline(
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121 SedimentDensityValue prev,
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122 SedimentDensityValue next,
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123 double km
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124 ) {
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125 double lower = prev.getKm();
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126 double upper = next.getKm();
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127 double upperDensity = next.getDensity();
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128 double lowerDensity = prev.getDensity();
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129
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130 double m =(upperDensity - lowerDensity)/(upper - lower) * km;
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131 double b = lowerDensity -
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132 ((upperDensity - lowerDensity)/(upper - lower) * lower);
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133 return (m * km) + b;
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134 }
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135
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136 public void cleanUp() {
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137 Set<Integer> keys = densities.keySet();
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138 for (Integer key : keys) {
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139 List<SedimentDensityValue> list = densities.get(key);
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140 if (list.size() == 0) {
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141 return;
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142 }
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Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
143 List<SedimentDensityValue> cleaned =
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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144 new ArrayList<SedimentDensityValue>();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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145 double prevkm = list.get(0).getKm();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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146 int counter = 0;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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147 double sum = 0d;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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148 for (SedimentDensityValue value : list) {
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Raimund Renkert <rrenkert@intevation.de>
parents:
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149 if (value.getKm() == prevkm) {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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150 sum += value.getDensity();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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151 counter++;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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152 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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153 else {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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154 cleaned.add(new SedimentDensityValue(
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
155 prevkm,
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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156 sum / counter,
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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157 value.getYear()));
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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158 sum = value.getDensity();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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159 counter = 1;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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160 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
161 prevkm = value.getKm();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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162 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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163 this.densities.put(key, cleaned);
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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164 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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165 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
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166 }
http://dive4elements.wald.intevation.org