Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/SedimentDensity.java @ 4521:71e6fe870c1d

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Added objects and factory for sediment densities.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 14 Nov 2012 17:17:02 +0100
parents
children 2fadc6c5cdad
rev   line source
4521
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.model.minfo;
71e6fe870c1d Added objects and factory for sediment densities.
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2
71e6fe870c1d Added objects and factory for sediment densities.
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3 import java.util.ArrayList;
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4 import java.util.Collection;
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5 import java.util.Collections;
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6 import java.util.HashMap;
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7 import java.util.List;
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8 import java.util.Map;
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9 import java.util.Set;
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10
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11 import org.apache.log4j.Logger;
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12 import org.jfree.util.Log;
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13
71e6fe870c1d Added objects and factory for sediment densities.
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14
71e6fe870c1d Added objects and factory for sediment densities.
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15 public class SedimentDensity
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16 {
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17 private static final Logger logger = Logger
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18 .getLogger(SedimentDensity.class);
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19
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20 private Map<Integer, List<SedimentDensityValue>> densities;
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21 private List<Integer> years;
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22
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23 public SedimentDensity() {
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24 this.densities = new HashMap<Integer, List<SedimentDensityValue>>();
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25 this.years = new ArrayList<Integer>();
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26 }
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27
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28 public Map<Integer, List<SedimentDensityValue>> getDensities() {
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29 return densities;
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30 }
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31
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32 public void setDensities(Map<Integer, List<SedimentDensityValue>> densities) {
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33 this.densities = densities;
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34 }
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35
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36 public void addDensity(double km, double density, int year) {
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37 logger.debug("adding " + year);
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38 if (this.densities.containsKey(year)) {
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39 List<SedimentDensityValue> list = this.densities.get(year);
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40 list.add(new SedimentDensityValue(km, density, year));
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41 }
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42 else {
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43 List<SedimentDensityValue> list =
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44 new ArrayList<SedimentDensityValue>();
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45 list.add(new SedimentDensityValue(km, density, year));
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46 densities.put(year, list);
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47 }
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48 if (!this.years.contains(new Integer(year))) {
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49 logger.debug("new year");
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50 years.add(new Integer(year));
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51 }
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52 }
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53
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54 public List<Integer> getYears() {
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55 return years;
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56 }
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57
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58 public void setYears(List<Integer> years) {
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59 this.years = years;
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60 }
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61
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62 public double getDensity(double km, int year) {
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63 Collections.sort(this.years);
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64 if (this.years.size() == 1) {
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65 return getDensityAtKm(densities.get(year), km);
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66 }
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67 else {
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68 for (int i = 0; i < years.size() -1; i++) {
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69 int y1 = years.get(i);
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70 int y2 = years.get(i + 1);
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71 int mid = Math.round((y1 + y2) / 2);
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72 if (year < mid) {
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73 return getDensityAtKm(densities.get(y1), km);
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74 }
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75 else if (i == years.size() -1) {
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76 continue;
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77 }
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78 else {
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79 return getDensityAtKm(densities.get(y2), km);
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80 }
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81 }
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82 }
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83 return -1d;
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84 }
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85
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86 private double getDensityAtKm(
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87 List<SedimentDensityValue> values,
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88 double km
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89 ) {
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90 boolean found = true;
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91 SedimentDensityValue prev = null;
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92 SedimentDensityValue next = null;
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93 for (SedimentDensityValue sdv: values) {
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94 logger.debug("year: " + sdv.getYear());
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95 if (sdv.getKm() == km) {
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96 prev = sdv;
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97 found = true;
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98 break;
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99 }
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100 if (sdv.getKm() > km) {
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101 next = sdv;
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102 break;
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103 }
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104 prev = sdv;
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105 }
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106 if (found) {
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107 return prev.getDensity();
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108 }
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109 else {
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110 return spline(prev, next, km);
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111 }
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112 }
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113
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114 private double spline(
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115 SedimentDensityValue prev,
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116 SedimentDensityValue next,
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117 double km
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118 ) {
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119 double lower = prev.getKm();
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120 double upper = next.getKm();
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121 double upperDensity = next.getDensity();
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122 double lowerDensity = prev.getDensity();
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123
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124 double m =(upperDensity - lowerDensity)/(upper - lower) * km;
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125 double b = lowerDensity -
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126 ((upperDensity - lowerDensity)/(upper - lower) * lower);
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127 return (m * km) + b;
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128 }
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129
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130 public void cleanUp() {
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131 Set<Integer> keys = densities.keySet();
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132 for (Integer key : keys) {
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133 List<SedimentDensityValue> list = densities.get(key);
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134 if (list.size() == 0) {
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135 return;
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136 }
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137 List<SedimentDensityValue> cleaned =
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138 new ArrayList<SedimentDensityValue>();
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139 double prevkm = list.get(0).getKm();
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140 int counter = 0;
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141 double sum = 0d;
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142 for (SedimentDensityValue value : list) {
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143 if (value.getKm() == prevkm) {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
144 sum += value.getDensity();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
145 counter++;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
146 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
147 else {
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
148 cleaned.add(new SedimentDensityValue(
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
149 prevkm,
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
150 sum / counter,
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
151 value.getYear()));
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
152 sum = value.getDensity();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
153 counter = 1;
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
154 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
155 prevkm = value.getKm();
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
156 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
157 this.densities.put(key, cleaned);
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
158 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
159 }
71e6fe870c1d Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
160 }
http://dive4elements.wald.intevation.org