Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/parsers/W80Parser.java @ 6723:796750499cd2
issue1393/SedimentYieldParser: set kind of SedimentYields
epending on import location.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Wed, 31 Jul 2013 11:12:53 +0200 |
parents | 4c3ccf2b0304 |
children | 3bb1c62ad732 |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.importer.parsers; |
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10 |
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11 import org.dive4elements.artifacts.common.utils.FileTools; |
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12 |
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13 import org.dive4elements.river.importer.XY; |
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14 |
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15 import org.dive4elements.river.importer.parsers.tim.Coordinate; |
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16 |
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17 import org.dive4elements.river.utils.DateGuesser; |
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18 import org.dive4elements.river.utils.EpsilonComparator; |
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19 |
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20 import java.io.File; |
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21 import java.io.IOException; |
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22 |
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23 import java.util.ArrayList; |
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24 import java.util.Calendar; |
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25 import java.util.Date; |
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26 import java.util.List; |
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27 import java.util.Map; |
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28 import java.util.TreeMap; |
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29 |
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30 import org.apache.log4j.Logger; |
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31 |
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32 |
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33 /** |
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34 * To create cross-sections, generate: Map<double,list<xy>> from files |
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35 * in w80 format. |
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36 */ |
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37 public class W80Parser extends LineParser implements CrossSectionParser |
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38 { |
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39 /** Private logger. */ |
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40 private static Logger logger = Logger.getLogger(W80Parser.class); |
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41 |
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42 |
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43 /** The current line to which add points. */ |
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44 private List<XY> currentLine; |
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45 |
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46 |
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47 /** Data collected so far, last element will be currentLine. */ |
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48 protected Map<Double, List<XY>> data; |
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49 |
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50 |
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51 /** Anchor to project to. */ |
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52 private static class Anchor extends Coordinate { |
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53 |
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54 private static final double EPSILON = 1e-5; |
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55 |
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56 private double station; |
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57 |
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58 public Anchor(double x, double y, double z, double station) { |
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59 super(x, y, z); |
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60 this.station = station; |
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61 } |
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62 |
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63 public boolean sameStation(double station) { |
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64 return Math.abs(this.station - station) < EPSILON; |
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65 } |
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66 } |
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67 |
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68 |
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69 /** Reference point for simple projection. */ |
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70 private Anchor anchor; |
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71 |
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72 |
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73 /** |
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74 * Reference point for distance calculations, introduced to |
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75 * deal with bends in the lines. |
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76 * Array has two entrys: first is GK-Right, second GK-High. |
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77 */ |
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78 private double[] lastPointGK; |
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79 |
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80 |
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81 /** Measurement date of anchor as listed in w80 file. */ |
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82 private Date anchorDate; |
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83 |
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84 |
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85 private double distanceToLastPoint(double gkr, double gkh) { |
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86 double dx = gkr - lastPointGK[0]; |
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87 double dy = gkh - lastPointGK[1]; |
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88 double d = dx*dx + dy*dy; |
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89 |
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90 return Math.sqrt(d); |
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91 } |
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92 |
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93 |
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94 /** Trivial constructor. */ |
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95 public W80Parser() { |
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96 data = new TreeMap<Double, List<XY>>(EpsilonComparator.CMP); |
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97 } |
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98 |
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99 |
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100 /** Get the description of the cross section parsed. */ |
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101 @Override |
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102 public String getDescription() { |
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103 return FileTools.removeExtension(getFileName()); |
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104 } |
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105 |
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106 |
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107 /** Get the year of this cross sections measurement. */ |
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108 @Override |
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109 public Integer getYear() { |
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110 if (anchorDate == null) { |
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111 return null; |
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112 } |
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113 Calendar dateCalendar = Calendar.getInstance(); |
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114 dateCalendar.setTime(anchorDate); |
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115 return dateCalendar.get(Calendar.YEAR); |
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116 } |
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117 |
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118 |
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119 /** |
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120 * Return the data parsed. |
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121 * @return map of stations (km) to list of points. |
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122 */ |
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123 @Override |
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124 public Map<Double, List<XY>> getData() { |
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125 return data; |
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126 } |
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127 |
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128 |
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129 public void parseW80s(File root, final Callback callback) { |
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130 |
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131 FileTools.walkTree(root, new FileTools.FileVisitor() { |
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132 @Override |
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133 public boolean visit(File file) { |
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134 if (file.isFile() && file.canRead() |
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135 && file.getName().toLowerCase().endsWith(".w80") |
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136 && (callback == null || callback.accept(file))) { |
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137 reset(); |
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138 try { |
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139 parse(file); |
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140 logger.info("parsing done"); |
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141 if (callback != null) { |
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142 callback.parsed(W80Parser.this); |
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143 } |
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144 } |
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145 catch (IOException ioe) { |
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146 logger.error("IOException while parsing file"); |
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147 return false; |
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148 } |
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149 } |
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150 return true; |
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151 } |
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152 }); |
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153 } |
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154 |
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155 |
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156 /** Called before consuming first line of file. */ |
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157 public void reset() { |
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158 data.clear(); |
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159 currentLine = new ArrayList<XY>(); |
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160 anchor = null; |
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161 anchorDate = null; |
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162 lastPointGK = new double[] {0d,0d}; |
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163 } |
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164 |
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165 |
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166 /** |
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167 * Get the Index of the last cross-section lines point. |
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168 * @return last points index, -1 if not available. |
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169 */ |
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170 private int getLastPointIdx() { |
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171 if (currentLine == null || currentLine.isEmpty()) { |
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172 return -1; |
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173 } |
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174 XY lastPoint = this.currentLine.get(currentLine.size()-1); |
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175 return lastPoint.getIndex(); |
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176 } |
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177 |
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178 |
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179 private double getLastPointX() { |
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180 if (currentLine == null || currentLine.isEmpty()) { |
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181 return 0d; |
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182 } |
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183 XY lastPoint = this.currentLine.get(currentLine.size()-1); |
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184 return lastPoint.getX(); |
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185 } |
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186 |
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187 |
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188 /** |
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189 * Add a Point (YZ,Index) to the current cross section line. |
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190 * @param y The y coordinate of new point. |
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191 * @param z The z coordinate of new point. |
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192 * @param idx Ignored, the parameter of new point. |
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193 * @return true if point could been added, false otherwise (e.g. not |
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194 * parsable y or z values. |
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195 */ |
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196 private boolean addPoint(double gkr, double gkh, double height, String idx) { |
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197 // Calculate distance between this and lst point (add distances). |
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198 double d = distanceToLastPoint(gkr, gkh); |
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199 double totalX = getLastPointX() + d; |
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200 |
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201 // We ignore idx, and increment instead. |
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202 int index; |
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203 int lastPointIdx = getLastPointIdx(); |
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204 if (lastPointIdx <= 0) { |
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205 index = 1; |
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206 } else { |
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207 index = lastPointIdx + 1; |
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208 } |
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209 |
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210 this.lastPointGK[0] = gkr; |
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211 this.lastPointGK[1] = gkh; |
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212 currentLine.add(new XY(totalX, height/1000d, index)); |
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213 return true; |
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214 } |
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215 |
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216 |
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217 /** |
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218 * Called for each line. Try to extract info from a w80 line. |
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219 */ |
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220 @Override |
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221 protected void handleLine(int lineNum, String line) { |
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222 // The 'shore' field shows which side of the river the shore is measured. |
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223 // Therefore, the points have to be added in the correct order (also |
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224 // because later distances are calculated which cannot be |
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225 // negative. |
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226 String pointId = line.substring(0,20); |
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227 String station = line.substring(9,15); |
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228 String shore = line.substring(15,16); |
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229 // TODO: There is 'station' and a 'shore'-code behind. |
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230 // 1 = left, 2 = right. none = middle |
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231 String pointIndex = line.substring(16,21); |
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232 // For GK, first seven digits are of interest. |
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233 String gkRight = line.substring(20,30); |
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234 String gkHigh = line.substring(30,40); |
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235 String date = line.substring(40,46); |
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236 /* Fields not (yet?) of interest for FLYS |
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237 String locType = line.substring(46,47); |
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238 */ |
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239 String height = line.substring(47,54); |
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240 String dateH = line.substring(54,60); |
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241 /* Fields not (yet?) of interest for FLYS |
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242 String typeH = line.substring(60,61); |
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243 String kindH = line.substring(61,64); |
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244 */ |
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245 String dateDec = line.substring(64,70); |
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246 /* Fields not (yet?) of interest for FLYS |
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247 String note = line.substring(70,78); |
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248 String actual = line.substring(78); |
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249 */ |
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250 |
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251 double stationKm = Double.parseDouble(station) / 1000d; |
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252 double gkRightKm = Double.parseDouble(gkRight.substring(0,7)); |
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253 double gkHighKm = Double.parseDouble(gkHigh.substring(0,7)); |
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254 double heightM = Double.parseDouble(height); |
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255 |
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256 // New (or first) line. |
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257 if (anchor == null || !anchor.sameStation(stationKm)) { |
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258 anchor = new Anchor(gkRightKm, gkHighKm, heightM, stationKm); |
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259 lastPointGK[0] = gkRightKm; |
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260 lastPointGK[1] = gkHighKm; |
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261 currentLine = new ArrayList<XY>(); |
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262 data.put(stationKm, currentLine); |
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263 currentLine.add(new XY(0d, heightM, 0)); |
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264 try { |
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265 anchorDate = DateGuesser.guessDate(date); |
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266 } |
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267 catch (IllegalArgumentException iae) { |
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268 logger.warn("W80: Invalid date '" + date + "'."); |
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269 } |
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270 } |
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271 else { |
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272 addPoint(gkRightKm, gkHighKm, heightM, pointIndex); |
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273 } |
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274 } |
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275 |
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276 |
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277 /** Called when file is fully consumed. */ |
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278 @Override |
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279 protected void finish() { |
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280 logger.info("Parsed " + data.size() + " lines"); |
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281 } |
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282 |
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283 |
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284 /** Parses files given as arguments. */ |
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285 public static void main(String [] args) { |
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286 |
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287 W80Parser parser = new W80Parser(); |
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288 |
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289 logger.warn("Start parsing files."); |
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290 for (String arg: args) { |
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291 logger.warn("Parsing a file."); |
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292 parser.parseW80s(new File(arg), null); |
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293 } |
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294 logger.error("Finished parsing files."); |
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295 } |
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296 } |
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297 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |