Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedloadOverview.java @ 3914:729bd242c82e

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MINFO: Fixed SQL statement in BedloadOverview. Exclude data where km is null. flys-artifacts/trunk@5584 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Mon, 24 Sep 2012 09:10:42 +0000
parents 35a6c9a49a76
children
rev   line source
3751
ae598cf50682 Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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1 package de.intevation.flys.artifacts.model.minfo;
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2
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3 import java.io.Serializable;
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Raimund Renkert <raimund.renkert@intevation.de>
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4 import java.text.SimpleDateFormat;
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5 import java.util.ArrayList;
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6 import java.util.Date;
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7 import java.util.List;
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8
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9 import org.apache.log4j.Logger;
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10 import org.hibernate.SQLQuery;
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11 import org.hibernate.Session;
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12 import org.hibernate.type.StandardBasicTypes;
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13 import org.w3c.dom.Document;
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14 import org.w3c.dom.Element;
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15
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16 import de.intevation.flys.utils.KMIndex;
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17
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18 public class BedloadOverview implements Serializable {
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19
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35a6c9a49a76 Fixed wrong assigned loggers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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20 private static Logger log = Logger.getLogger(BedloadOverview.class);
35a6c9a49a76 Fixed wrong assigned loggers.
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21
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22 /**
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23 * Serial version UId.
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24 */
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25 private static final long serialVersionUID = -7607668985959407096L;
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26
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27 public interface Filter {
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28 boolean accept(KMIndex<List<Date>> entry);
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29
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30 } // interface Filter
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31
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32
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33 public static final Filter ACCEPT = new Filter() {
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34 public boolean accept(KMIndex<List<Date>> entry) {
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35 return true;
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36 }
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37 };
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38
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39 public static class KmFilter implements Filter {
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40
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41 protected double km;
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42
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43 public KmFilter (double km) {
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44 this.km = km;
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45 }
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46 public boolean accept(KMIndex<List<Date>> list) {
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47 for (KMIndex.Entry<List<Date>> e: list){
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48 if (e.getKm() == km) {
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49 return true;
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50 }
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51 }
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52 return false;
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53 }
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54 };
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55
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56 public static class DateFilter implements Filter {
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57
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58 protected Date date;
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59
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60 public DateFilter (Date date) {
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61 this.date = date;
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62 }
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63
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64 public boolean accept(KMIndex<List<Date>> list) {
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65 for (KMIndex.Entry<List<Date>> e: list){
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66 if (e.getValue().equals(this.date)) {
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67 return true;
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68 }
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69 }
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70 return false;
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71 }
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72 };
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73
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74 public static final double EPSILON = 1e-4;
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75
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76 public static final String DATE_FORMAT = "dd.MM.yyyy";
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77
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78 public static final String SQL_SQ =
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79 "SELECT" +
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80 " m.km AS km," +
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81 " m.datum AS datum " +
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82 "FROM messung m " +
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83 " JOIN station s" +
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84 " ON m.stationid = s.stationid " +
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85 " JOIN gewaesser g " +
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86 " ON s.gewaesserid = g.gewaesserid " +
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87 "WHERE" +
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88 " g.name = :name AND " +
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89 " m.km IS NOT NULL " +
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90 "ORDER by" +
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91 " m.km, m.datum";
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92
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93 protected String riverName;
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94
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95 protected KMIndex<List<Date>> entries;
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96
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97 public BedloadOverview() {
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98 entries = new KMIndex<List<Date>>();
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99 }
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100
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101 public BedloadOverview(String riverName) {
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102 this();
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103 this.riverName = riverName;
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104 }
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105
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106 private static final boolean epsilonEquals(double a, double b) {
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107 return Math.abs(a - b) < EPSILON;
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108 }
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109
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110 protected void loadData(Session session) {
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111 SQLQuery query = session.createSQLQuery(SQL_SQ)
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112 .addScalar("km", StandardBasicTypes.DOUBLE)
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113 .addScalar("datum", StandardBasicTypes.DATE);
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114
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115 query.setString("name", riverName);
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116
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117 List<Object []> list = query.list();
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118
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119 if (list.isEmpty()) {
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120 log.warn("No river '" + riverName + "' found.");
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121 }
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122
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123 Double prevKm = -Double.MAX_VALUE;
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124 List<Date> dates = new ArrayList<Date>();
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125
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126 for (Object [] row: list) {
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127 Double km = (Double)row[0];
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128 if (!epsilonEquals(km, prevKm) && !dates.isEmpty()) {
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129 entries.add(prevKm, dates);
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130 dates = new ArrayList<Date>();
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131 }
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132 dates.add((Date)row[1]);
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133 prevKm = km;
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134 }
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135
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136 if (!dates.isEmpty()) {
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137 entries.add(prevKm, dates);
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138 }
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139 }
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140
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141 public boolean load(Session session) {
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142
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143 loadData(session);
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144
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145 return true;
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146 }
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147
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148
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149 public void generateOverview(Document document) {
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150 generateOverview(document, ACCEPT);
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151 }
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152
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153 public KMIndex<List<Date>> filter(Filter f) {
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154 // TODO: Apply filter
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155 return entries;
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156 }
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157
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158 public void generateOverview(
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159 Document document,
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160 Filter filter
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161 ) {
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162 KMIndex<List<Date>> filtered = filter(ACCEPT);
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163
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164 Element sqElement = document.createElement("bedload");
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165
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166 Element riverElement = document.createElement("river");
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167
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168 riverElement.setAttribute("name", riverName);
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169
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170 sqElement.appendChild(riverElement);
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171
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172 SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
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173
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174 Element kmE = document.createElement("km");
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175
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176 for (KMIndex.Entry<List<Date>> e: filtered) {
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177
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178 List<Date> dates = e.getValue();
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179
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180 if (!dates.isEmpty()) {
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181 Element dEs = document.createElement("dates");
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182
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183 for (Date d: dates) {
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184 Element dE = document.createElement("date");
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185
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186 dE.setAttribute("value", df.format(d));
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187
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188 dEs.appendChild(dE);
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189 }
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190
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191 kmE.appendChild(dEs);
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192 }
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193 }
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194
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195 sqElement.appendChild(kmE);
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196
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197 document.appendChild(sqElement);
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198 }
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199 }
http://dive4elements.wald.intevation.org