Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/importer/parsers/W80Parser.java @ 8187:3bb1c62ad732

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Moved package org.dive4elements.river.utils to org.dive4elements.river.backend.utils.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 04 Sep 2014 15:03:25 +0200
parents 4c3ccf2b0304
children 9d2e69f971f5
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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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.backend.utils.DateGuesser;
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18 import org.dive4elements.river.backend.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;
4761
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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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94cb955234ab W80Parser: Renamed lastPointIdx() to getLastPointIdx().
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170 private int getLastPointIdx() {
4749
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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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diff changeset
196 private boolean addPoint(double gkr, double gkh, double height, String idx) {
4804
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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197 // Calculate distance between this and lst point (add distances).
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diff changeset
198 double d = distanceToLastPoint(gkr, gkh);
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diff changeset
199 double totalX = getLastPointX() + d;
4751
ee6c0f246b28 W80Parser: Added TODO/comment.
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diff changeset
200
4749
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diff changeset
201 // We ignore idx, and increment instead.
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parents: 4747
diff changeset
202 int index;
4803
94cb955234ab W80Parser: Renamed lastPointIdx() to getLastPointIdx().
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parents: 4802
diff changeset
203 int lastPointIdx = getLastPointIdx();
4749
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diff changeset
204 if (lastPointIdx <= 0) {
3028037c6293 W80Parser: addPoint and lastIdx functions to add a point and find last points index.
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diff changeset
205 index = 1;
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diff changeset
206 } else {
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diff changeset
207 index = lastPointIdx + 1;
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diff changeset
208 }
3028037c6293 W80Parser: addPoint and lastIdx functions to add a point and find last points index.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
209
4804
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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diff changeset
210 this.lastPointGK[0] = gkr;
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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parents: 4803
diff changeset
211 this.lastPointGK[1] = gkh;
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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diff changeset
212 currentLine.add(new XY(totalX, height/1000d, index));
4749
3028037c6293 W80Parser: addPoint and lastIdx functions to add a point and find last points index.
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diff changeset
213 return true;
4728
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diff changeset
214 }
ccae8b43e527 Initial empty version of W80Parser.
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parents:
diff changeset
215
ccae8b43e527 Initial empty version of W80Parser.
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parents:
diff changeset
216
ccae8b43e527 Initial empty version of W80Parser.
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parents:
diff changeset
217 /**
4755
ba8c2147b4ff W80Parser: Correct c&p stuff in comments (da66->w80).
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parents: 4751
diff changeset
218 * Called for each line. Try to extract info from a w80 line.
4728
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parents:
diff changeset
219 */
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parents:
diff changeset
220 @Override
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parents:
diff changeset
221 protected void handleLine(int lineNum, String line) {
4757
e965593eee57 W80Parser: Whitespace-cosmetics and comment.
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parents: 4756
diff changeset
222 // The 'shore' field shows which side of the river the shore is measured.
e965593eee57 W80Parser: Whitespace-cosmetics and comment.
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diff changeset
223 // Therefore, the points have to be added in the correct order (also
e965593eee57 W80Parser: Whitespace-cosmetics and comment.
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parents: 4756
diff changeset
224 // because later distances are calculated which cannot be
e965593eee57 W80Parser: Whitespace-cosmetics and comment.
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parents: 4756
diff changeset
225 // negative.
4728
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parents:
diff changeset
226 String pointId = line.substring(0,20);
4758
4db3a1509e90 W80Parser: Respect (ignore) 'shore' field of w80 files.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4757
diff changeset
227 String station = line.substring(9,15);
4804
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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parents: 4803
diff changeset
228 String shore = line.substring(15,16);
4751
ee6c0f246b28 W80Parser: Added TODO/comment.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4750
diff changeset
229 // TODO: There is 'station' and a 'shore'-code behind.
ee6c0f246b28 W80Parser: Added TODO/comment.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4750
diff changeset
230 // 1 = left, 2 = right. none = middle
4804
e9566109bd5b W80Parser: Implement linear cascading distance measurements.
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diff changeset
231 String pointIndex = line.substring(16,21);
4750
60398ab6129a W80Parser: Actually add points while parsing w80 file.
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parents: 4749
diff changeset
232 // For GK, first seven digits are of interest.
4728
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parents:
diff changeset
233 String gkRight = line.substring(20,30);
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
234 String gkHigh = line.substring(30,40);
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
235 String date = line.substring(40,46);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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parents: 4758
diff changeset
236 /* Fields not (yet?) of interest for FLYS
4728
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parents:
diff changeset
237 String locType = line.substring(46,47);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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parents: 4758
diff changeset
238 */
4728
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
239 String height = line.substring(47,54);
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
240 String dateH = line.substring(54,60);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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parents: 4758
diff changeset
241 /* Fields not (yet?) of interest for FLYS
4728
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parents:
diff changeset
242 String typeH = line.substring(60,61);
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
243 String kindH = line.substring(61,64);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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parents: 4758
diff changeset
244 */
4728
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parents:
diff changeset
245 String dateDec = line.substring(64,70);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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parents: 4758
diff changeset
246 /* Fields not (yet?) of interest for FLYS
4728
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parents:
diff changeset
247 String note = line.substring(70,78);
ccae8b43e527 Initial empty version of W80Parser.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
248 String actual = line.substring(78);
4759
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
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diff changeset
249 */
35f4ece9562e W80Parser: Comment code that is not (yet?) used by FLYS.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4758
diff changeset
250
4750
60398ab6129a W80Parser: Actually add points while parsing w80 file.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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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.
4768
99f9e371371b Move distance calculation to Coordinate class. Use inheritance instead of composition in Anchor class. Made Anchor class static. Use epsilon equal comparision when checking for same station: Boy, do you ever learn that sharp equal comparison of doubles is not a clever idea!?
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257 if (anchor == null || !anchor.sameStation(stationKm)) {
99f9e371371b Move distance calculation to Coordinate class. Use inheritance instead of composition in Anchor class. Made Anchor class static. Use epsilon equal comparision when checking for same station: Boy, do you ever learn that sharp equal comparison of doubles is not a clever idea!?
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258 anchor = new Anchor(gkRightKm, gkHighKm, heightM, stationKm);
4804
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259 lastPointGK[0] = gkRightKm;
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260 lastPointGK[1] = gkHighKm;
4750
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261 currentLine = new ArrayList<XY>();
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262 data.put(stationKm, currentLine);
4802
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263 currentLine.add(new XY(0d, heightM, 0));
4769
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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 }
4750
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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 }
4728
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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) {
4802
7dd5baca4f53 W80Parser: Cosmetics, whitespace, TODO resolved, logging improved.
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diff changeset
291 logger.warn("Parsing a file.");
4728
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parents:
diff changeset
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 :
http://dive4elements.wald.intevation.org