Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/extreme/ExtremeCalculation.java @ 4282:8b4988815974

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Added marker for Ws and Qs in Historical Discharge WQ charts. Therefore, the XYChartGenerator got two new methods addDomainMarker(Marker, boolean) and addValueMarker(Marker, boolean). The boolean parameters determine, if the marker should be visible or not. This is analogous to addAxisSeries(XYSeries, int, boolean).
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 29 Oct 2012 05:59:27 +0100
parents 5cc9453456a7
children 10c1a413a1e0
rev   line source
3775
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1 package de.intevation.flys.artifacts.model.extreme;
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2
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3 import org.apache.commons.logging.Log;
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4 import org.apache.commons.logging.LogFactory;
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5
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6 import org.apache.commons.math.MathException;
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7
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8 import org.apache.commons.math.optimization.fitting.CurveFitter;
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9
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10 import org.apache.commons.math.optimization.general.LevenbergMarquardtOptimizer;
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12 import de.intevation.flys.artifacts.access.ExtremeAccess;
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14 import de.intevation.flys.artifacts.math.Utils;
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16 import de.intevation.flys.artifacts.math.fitting.Function;
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17 import de.intevation.flys.artifacts.math.fitting.FunctionFactory;
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18
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19 import de.intevation.flys.artifacts.model.Calculation;
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20 import de.intevation.flys.artifacts.model.CalculationResult;
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21 import de.intevation.flys.artifacts.model.RangeWithValues;
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22 import de.intevation.flys.artifacts.model.RiverFactory;
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23 import de.intevation.flys.artifacts.model.WQKms;
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24 import de.intevation.flys.artifacts.model.WstValueTable;
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25 import de.intevation.flys.artifacts.model.WstValueTableFactory;
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26
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27 import de.intevation.flys.model.River;
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28
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29 import de.intevation.flys.utils.DoubleUtil;
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30 import de.intevation.flys.utils.KMIndex;
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32 import gnu.trove.TDoubleArrayList;
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33
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34 import java.util.List;
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35
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36 /** Calculate extrapolated W. */
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37 public class ExtremeCalculation
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38 extends Calculation
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39 {
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40 private static final Log log =
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41 LogFactory.getLog(ExtremeCalculation.class);
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42
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43 protected String river;
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44 protected String function;
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45 protected double from;
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46 protected double to;
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47 protected double step;
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48 protected double percent;
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49 protected List<RangeWithValues> ranges;
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50
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51 public ExtremeCalculation() {
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52 }
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53
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54 public ExtremeCalculation(ExtremeAccess access) {
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55 String river = access.getRiver();
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56 String function = access.getFunction();
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57 Double from = access.getFrom();
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58 Double to = access.getTo();
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59 Double step = access.getStep();
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60 Double percent = access.getPercent();
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61 List<RangeWithValues> ranges = access.getRanges();
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62
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63 if (river == null) {
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64 // TODO: i18n
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65 addProblem("extreme.no.river");
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66 }
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68 if (function == null) {
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69 // TODO: i18n
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70 addProblem("extreme.no.function");
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71 }
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73 if (from == null) {
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74 // TODO: i18n
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75 addProblem("extreme.no.from");
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76 }
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78 if (to == null) {
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79 // TODO: i18n
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80 addProblem("extreme.no.to");
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81 }
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83 if (step == null) {
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84 // TODO: i18n
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85 addProblem("extreme.no.step");
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86 }
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87
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88 if (percent == null) {
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89 // TODO: i18n
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90 addProblem("extreme.no.percent");
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91 }
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93 if (ranges == null) {
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94 // TODO: i18n
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95 addProblem("extreme.no.ranges");
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96 }
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97
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98 if (!hasProblems()) {
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99 this.river = river;
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100 this.function = function;
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101 this.from = Math.min(from, to);
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102 this.to = Math.max(from, to);
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103 this.step = Math.max(0.001d, Math.abs(step)/1000d);
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104 this.percent = Math.max(0d, Math.min(100d, percent));
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105 this.ranges = ranges;
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106 }
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107 }
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108
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109
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110 /** Calculate an extreme curve (extrapolate). */
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111 public CalculationResult calculate() {
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112
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113 WstValueTable wst = null;
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114
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115 River river = RiverFactory.getRiver(this.river);
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116 if (river == null) {
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117 // TODO: i18n
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118 addProblem("extreme.no.such.river", this.river);
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119 }
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120 else {
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121 wst = WstValueTableFactory.getTable(river);
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122 if (wst == null) {
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123 // TODO: i18n
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124 addProblem("extreme.no.wst.table");
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125 }
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126 }
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127
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128 Function function =
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129 FunctionFactory.getInstance().getFunction(this.function);
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130 if (function == null) {
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131 // TODO: i18n
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132 addProblem("extreme.no.such.function", this.function);
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133 }
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134
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135 return hasProblems()
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136 ? new CalculationResult(this)
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137 : innerCalculate(wst, function);
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138 }
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139
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140 protected String wqkmsName(int i) {
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141 StringBuilder sb = new StringBuilder("W(");
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142 boolean already = false;
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143 for (RangeWithValues r: ranges) {
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144 double [] values = r.getValues();
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145 if (i < values.length) {
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146 if (already) {
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147 sb.append(", ");
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148 }
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149 else {
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150 already = true;
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151 }
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152 // TODO: i18n
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153 sb.append(values[i]);
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154 }
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155 }
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156 return sb.append(')').toString();
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157 }
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158
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159 protected WQKms [] allocWQKms() {
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160 int max = 0;
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161 for (RangeWithValues r: ranges) {
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162 double [] values = r.getValues();
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163 if (values.length > max) {
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164 max = values.length;
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165 }
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166 }
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167 WQKms [] wqkms = new WQKms[max];
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168 for (int i = 0; i < max; ++i) {
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169 wqkms[i] = new WQKms(wqkmsName(i));
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170 }
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171 return wqkms;
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172 }
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173
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174
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175 /** Calculate an extreme curve (extrapolate). */
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176 protected CalculationResult innerCalculate(
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177 WstValueTable wst,
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178 Function function
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179 ) {
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180 RangeWithValues range = null;
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181
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182 double [] chiSqr = { 0d };
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183
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184 KMIndex<Curve> curves = new KMIndex<Curve>();
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185 WQKms [] wqkms = allocWQKms();
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186
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187 for (double km = from; km <= to; km += step) {
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188 double currentKm = DoubleUtil.round(km);
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189
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190 if (range == null || !range.inside(currentKm)) {
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191 for (RangeWithValues r: ranges) {
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192 if (r.inside(currentKm)) {
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193 range = r;
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194 break;
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195 }
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196 }
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197 // TODO: i18n
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198 addProblem(currentKm, "extreme.no.range");
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199 continue;
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200 }
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201
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202 double [][] wqs = wst.interpolateTabulated(currentKm);
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203 if (wqs == null) {
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204 // TODO: i18n
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205 addProblem(currentKm, "extreme.no.raw.data");
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206 continue;
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207 }
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208
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209 // XXX: This should not be necessary for model data.
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210 if (!DoubleUtil.isValid(wqs)) {
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211 // TODO: i18n
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212 addProblem(currentKm, "extreme.invalid.data");
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213 continue;
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214 }
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215
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216 double [][] fitWQs = extractPointsToFit(wqs);
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217 if (fitWQs == null) {
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218 // TODO: i18n
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219 addProblem(currentKm, "extreme.too.less.points");
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220 continue;
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221 }
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222
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223 double [] coeffs = doFitting(function, wqs, chiSqr);
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224 if (coeffs == null) {
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225 // TODO: i18n
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226 addProblem(currentKm, "extreme.fitting.failed");
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227 }
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228
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229 Curve curve = new Curve(
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230 wqs[1], wqs[0],
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231 function.getName(),
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232 coeffs,
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233 chiSqr[0]);
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234
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235 curves.add(currentKm, curve);
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236
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237 double [] values = range.getValues();
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238
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239 int V = Math.min(values.length, wqkms.length);
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240 for (int i = 0; i < V; ++i) {
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241 double q = values[i];
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242 double w = curve.value(q);
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243 if (Double.isNaN(w)) {
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244 // TODO: i18n
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245 addProblem(currentKm, "extreme.evaluate.failed", values[i]);
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246 }
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247 else {
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248 wqkms[i].add(w, q);
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249 }
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250 }
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251 }
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252
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253 ExtremeResult result = new ExtremeResult(curves, wqkms);
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254 return new CalculationResult(result, this);
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255 }
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256
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257 protected static double [] doFitting(
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258 Function function,
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259 double [][] wqs,
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260 double [] chiSqr
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261 ) {
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262 LevenbergMarquardtOptimizer lmo = null;
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263
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264 double [] coeffs = null;
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265
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266 double [] ws = wqs[0];
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267 double [] qs = wqs[1];
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268
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269 for (double tolerance = 1e-10; tolerance < 1e-3; tolerance *= 10d) {
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270 lmo = new LevenbergMarquardtOptimizer();
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271 lmo.setCostRelativeTolerance(tolerance);
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272 lmo.setOrthoTolerance(tolerance);
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273 lmo.setParRelativeTolerance(tolerance);
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274
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275 CurveFitter cf = new CurveFitter(lmo);
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276
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277 for (int i = ws.length-1; i >= 0; --i) {
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278 cf.addObservedPoint(qs[i], ws[i]);
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279 }
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280
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281 try {
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282 coeffs = cf.fit(function, function.getInitialGuess());
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283 break;
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284 }
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285 catch (MathException me) {
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286 if (log.isDebugEnabled()) {
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287 log.debug("tolerance " + tolerance + " + failed.");
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288 }
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289 }
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290 }
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291 if (coeffs == null) {
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292 return null;
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293 }
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294 chiSqr[0] = lmo.getChiSquare();
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295 return coeffs;
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296 }
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297
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298 protected static double [][] extractPointsToFit(double [][] wqs) {
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299 TDoubleArrayList ows = new TDoubleArrayList();
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300 TDoubleArrayList oqs = new TDoubleArrayList();
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301
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302 double [] ws = wqs[0];
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303 double [] qs = wqs[1];
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304
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305 int N = Math.min(ws.length, qs.length);
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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306
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307 if (N < 2) {
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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308 log.warn("Too less points for fitting");
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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309 return null;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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310 }
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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311
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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312 double q2 = qs[N-1];
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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313 double w2 = ws[N-1];
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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314 double q1 = qs[N-2];
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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315 double w1 = ws[N-2];
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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316
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317 oqs.add(q2); oqs.add(q1);
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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318 ows.add(w2); ows.add(w1);
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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319
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320 int orientation = Utils.epsilonEquals(w1, w1)
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parents: 4059
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321 ? 0
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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322 : w1 > w2
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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323 ? -1
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324 : +1;
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325
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326 for (int i = N-3; i >= 0; --i) {
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327 double cq = qs[i];
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328 double cw = qs[i];
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329 int newOrientation = Utils.relativeCCW(
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parents: 4059
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330 q2, w2,
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parents: 4059
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331 q1, w1,
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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332 cq, cw);
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parents: 4059
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333
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334 if (newOrientation != 0 && newOrientation != orientation) {
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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335 break;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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336 }
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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337 oqs.add(cq);
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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338 ows.add(cw);
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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339
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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340 if (newOrientation != 0) {
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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341 // rotate last out
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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342 q2 = q1;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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343 w2 = w1;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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344 }
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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345 q1 = cq;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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346 w1 = cw;
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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347 }
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parents: 4059
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348
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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349 // XXX: Not really needed for fitting.
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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350 // oqs.reverse();
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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351 // ows.reverse();
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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352
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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353 return new double [][] {
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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354 ows.toNativeArray(),
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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355 oqs.toNativeArray()
5cc9453456a7 First complete but untested version of the 'Auslagerung extremer Wasserspiegellagen' calculation.
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parents: 4059
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356 };
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 4059
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357 }
3775
d52c4ca93ffb More infrastructure stuff for the "Auslagerung extremer Wasserspiegellagen".
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parents:
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358 }
d52c4ca93ffb More infrastructure stuff for the "Auslagerung extremer Wasserspiegellagen".
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parents:
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359 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org