Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/SQRelationCalculation.java @ 5831:bd047b71ab37

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Repaired internal references
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:06:39 +0200
parents flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/SQRelationCalculation.java@aaf810d4ec82
children
rev   line source
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bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5396
diff changeset
1 package org.dive4elements.river.artifacts.model.sq;
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2
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3 import org.dive4elements.river.artifacts.access.SQRelationAccess;
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4
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5 import org.dive4elements.river.artifacts.math.fitting.Function;
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6 import org.dive4elements.river.artifacts.math.fitting.FunctionFactory;
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7
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8 import org.dive4elements.river.artifacts.model.Calculation;
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9 import org.dive4elements.river.artifacts.model.CalculationResult;
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10 import org.dive4elements.river.artifacts.model.DateRange;
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11 import org.dive4elements.river.artifacts.model.Parameters;
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12
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13 import org.dive4elements.river.backend.SedDBSessionHolder;
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14
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15 import java.util.ArrayList;
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16 import java.util.List;
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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 public class SQRelationCalculation extends Calculation {
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21
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22 private static final Logger log =
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23 Logger.getLogger(SQRelationCalculation.class);
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24
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25 public static final String SQ_FUNCTION_NAME = "sq-pow";
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26
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27 protected String river;
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28 protected double location;
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29 protected DateRange period;
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30 protected double outliers;
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31 private String method;
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32
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33 public SQRelationCalculation() {
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34 }
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35
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36 public SQRelationCalculation(SQRelationAccess access) {
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37
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38 String river = access.getRiver();
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39 Double location = access.getLocation();
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40 DateRange period = access.getPeriod();
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41 Double outliers = access.getOutliers();
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42 String method = access.getOutlierMethod();
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43
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44 //river = "Rhein";
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45
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46 if (river == null) {
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47 // TODO: i18n
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48 addProblem("sq.missing.river");
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49 }
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50
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51 if (location == null) {
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52 // TODO: i18n
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53 addProblem("sq.missing.location");
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54 }
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55
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56 if (period == null) {
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57 // TODO: i18n
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58 addProblem("sq.missing.periods");
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59 }
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60
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61 if (outliers == null) {
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62 // TODO: i18n
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63 addProblem("sq.missing.outliers");
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64 }
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65
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66 if (method == null) {
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67 //TODO: i18n
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68 addProblem("sq.missing.method");
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69 }
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70
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71 if (!hasProblems()) {
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72 this.river = river;
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73 this.location = location;
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74 this.period = period;
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75 this.outliers = outliers;
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76 this.method = method;
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77 }
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78 }
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79
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80
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81 public CalculationResult calculate() {
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82 log.debug("SQRelationCalculation.calculate");
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83
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84 if (hasProblems()) {
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85 return new CalculationResult(this);
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86 }
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87
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88 SedDBSessionHolder.acquire();
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89 try {
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90 return internalCalculate();
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91 }
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92 finally {
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93 SedDBSessionHolder.release();
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94 }
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95 }
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96
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97 protected CalculationResult internalCalculate() {
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98
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99 Function function = FunctionFactory
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100 .getInstance()
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101 .getFunction(SQ_FUNCTION_NAME);
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102
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103 if (function == null) {
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104 log.error("No '" + SQ_FUNCTION_NAME + "' function found.");
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105 // TODO: i18n
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106 addProblem("sq.missing.sq.function");
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107 }
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108
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109 Measurements measurements =
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110 MeasurementFactory.getMeasurements(river, location, period);
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111
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112 SQFractionResult [] fractionResults =
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113 new SQFractionResult[SQResult.NUMBER_FRACTIONS];
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114
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115 for (int i = 0; i < fractionResults.length; ++i) {
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116 List<SQ> sqs = measurements.getSQs(i);
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117
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118 SQFractionResult fractionResult;
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119
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120 List<SQFractionResult.Iteration> iterations =
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121 doFitting(function, sqs);
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122
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123 if (iterations == null) {
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124 // TODO: i18n
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125 addProblem("sq.fitting.failed." + i);
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126 fractionResult = new SQFractionResult();
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127 }
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128 else {
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129 fractionResult = new SQFractionResult(
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130 sqs.toArray(new SQ[sqs.size()]),
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131 iterations);
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132 }
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133
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134 fractionResults[i] = fractionResult;
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135 }
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136
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137 return new CalculationResult(
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138 new SQResult[] { new SQResult(location, fractionResults) },
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139 this);
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140 }
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141
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142 protected List<SQFractionResult.Iteration> doFitting(
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143 final Function function,
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144 List<SQ> sqs
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145 ) {
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146 final List<SQFractionResult.Iteration> iterations =
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147 new ArrayList<SQFractionResult.Iteration>();
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148
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149 boolean success = new Fitting(function, outliers).fit(
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150 sqs,
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151 method,
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152 new Fitting.Callback() {
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153 @Override
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154 public void afterIteration(
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155 double [] coeffs,
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156 SQ [] measurements,
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157 SQ [] outliers,
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158 double standardDeviation,
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159 double chiSqr
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160 ) {
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161 Parameters parameters = createParameters(
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162 function.getParameterNames(),
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163 coeffs,
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164 standardDeviation,
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165 chiSqr);
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166 iterations.add(new SQFractionResult.Iteration(
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167 parameters,
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168 measurements,
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169 outliers));
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170 }
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171 });
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172
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173 return success ? iterations : null;
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174 }
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175
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176 public static final Parameters createParameters(
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177 String [] names,
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178 double [] values,
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179 double standardDeviation,
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180 double chiSqr
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181 ) {
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182 String [] columns = new String[names.length + 2];
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183 columns[0] = "chi_sqr";
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184 columns[1] = "std_dev";
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185 System.arraycopy(names, 0, columns, 2, names.length);
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186 Parameters parameters = new Parameters(columns);
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187 int row = parameters.newRow();
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188 parameters.set(row, names, values);
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189 parameters.set(row, "chi_sqr", chiSqr);
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190 parameters.set(row, "std_dev", standardDeviation);
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191 return parameters;
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192 }
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193 }
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194 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org