Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/SedimentDensity.java @ 4521:71e6fe870c1d
Added objects and factory for sediment densities.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Wed, 14 Nov 2012 17:17:02 +0100 |
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children | 2fadc6c5cdad |
rev | line source |
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4521
71e6fe870c1d
Added objects and factory for sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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1 package de.intevation.flys.artifacts.model.minfo; |
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2 |
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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 |
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14 |
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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) { |
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144 sum += value.getDensity(); |
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145 counter++; |
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146 } |
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147 else { |
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148 cleaned.add(new SedimentDensityValue( |
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149 prevkm, |
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150 sum / counter, |
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151 value.getYear())); |
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152 sum = value.getDensity(); |
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153 counter = 1; |
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154 } |
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155 prevkm = value.getKm(); |
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156 } |
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157 this.densities.put(key, cleaned); |
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158 } |
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159 } |
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160 } |