Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/Calculation4.java @ 1839:c3b44da22a3a
Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
flys-artifacts/trunk@3175 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 07 Nov 2011 12:37:41 +0000 |
parents | c09c9e05ecfa |
children | 2898b1ff6013 |
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1 package de.intevation.flys.artifacts.model; |
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2 |
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3 import java.util.List; |
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4 import java.util.Arrays; |
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5 import java.util.Comparator; |
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6 import java.util.Collections; |
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7 |
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8 import de.intevation.flys.utils.DoubleUtil; |
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9 |
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10 import de.intevation.flys.model.River; |
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11 import de.intevation.flys.model.Gauge; |
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12 |
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13 import de.intevation.flys.artifacts.model.WstValueTable.QPosition; |
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14 |
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15 import de.intevation.flys.artifacts.math.Function; |
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16 import de.intevation.flys.artifacts.math.Linear; |
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17 import de.intevation.flys.artifacts.math.Identity; |
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18 import de.intevation.flys.artifacts.math.BackJumpCorrector; |
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19 |
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20 import org.apache.log4j.Logger; |
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21 |
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22 public class Calculation4 |
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23 extends Calculation |
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24 { |
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25 private static Logger logger = Logger.getLogger(Calculation4.class); |
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26 |
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27 public static final double MINIMAL_STEP_WIDTH = 1e-5; |
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28 |
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29 public static final Comparator<Segment> REF_CMP = |
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30 new Comparator<Segment>() { |
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31 public int compare(Segment a, Segment b) { |
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32 double d = a.referencePoint - b.referencePoint; |
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33 if (d < 0d) return -1; |
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34 return d > 0d ? +1 : 0; |
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35 } |
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36 }; |
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37 |
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38 protected List<Segment> segments; |
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39 |
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40 protected boolean isQ; |
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41 |
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42 public Calculation4() { |
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43 } |
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44 |
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45 public Calculation4(List<Segment> segments, River river, boolean isQ) { |
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46 |
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47 this.segments = segments; |
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48 this.isQ = isQ; |
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49 |
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50 int numResults = -1; |
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51 |
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52 // assign reference points |
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53 for (Segment segment: segments) { |
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54 Gauge gauge = river.maxOverlap(segment.getFrom(), segment.getTo()); |
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55 |
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56 if (gauge == null) { |
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57 logger.warn("no gauge found. Defaults to mid point."); |
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58 segment.setReferencePoint( |
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59 0.5*(segment.getFrom()+segment.getTo())); |
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60 } |
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61 else { |
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62 double ref = gauge.getStation().doubleValue(); |
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63 logger.debug( |
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64 "reference gauge: " + gauge.getName() + |
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65 " (km " + ref + ")"); |
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66 segment.setReferencePoint(ref); |
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67 } |
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68 |
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69 double [] values = segment.values; |
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70 |
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71 if (numResults == -1) { |
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72 numResults = values.length; |
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73 } |
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74 else if (numResults != values.length) { |
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75 throw new IllegalArgumentException("wrong length of values"); |
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76 } |
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77 |
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78 // convert to Q if needed |
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79 if (!isQ && gauge != null) { |
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80 double [][] table = new DischargeTables( |
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81 river.getName(), gauge.getName()).getFirstTable(); |
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82 |
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83 // need the original values for naming |
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84 segment.backup(); |
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85 |
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86 for (int i = 0; i < values.length; ++i) { |
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87 values[i] = DischargeTables.getQForW(table, values[i]); |
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88 } |
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89 } |
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90 } // for all segments |
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91 |
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92 Collections.sort(segments, REF_CMP); |
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93 } |
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94 |
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95 public CalculationResult calculate( |
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96 WstValueTable table, |
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97 double from, double to, double step |
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98 ) { |
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99 boolean debug = logger.isDebugEnabled(); |
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100 |
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101 if (debug) { |
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102 logger.debug( |
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103 "calculate from " + from + " to " + to + " step " + step); |
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104 logger.debug("# segments: " + segments.size()); |
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105 for (Segment segment: segments) { |
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106 logger.debug(" " + segment); |
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107 } |
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108 } |
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109 |
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110 if (segments.isEmpty()) { |
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111 logger.debug("no segments found"); |
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112 // TODO: I18N |
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113 addProblem("no segments found"); |
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114 return new CalculationResult(new WQKms[0], this); |
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115 } |
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116 |
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117 int numResults = segments.get(0).values.length; |
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118 |
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119 if (numResults < 1) { |
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120 logger.debug("no values given"); |
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121 // TODO: I18N |
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122 addProblem("no values given"); |
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123 return new CalculationResult(new WQKms[0], this); |
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124 } |
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125 |
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126 |
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127 WQKms [] results = new WQKms[numResults]; |
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128 for (int i = 0; i < results.length; ++i) { |
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129 results[i] = new WQKms(); |
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130 } |
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131 |
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132 if (Math.abs(step) < MINIMAL_STEP_WIDTH) { |
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133 step = MINIMAL_STEP_WIDTH; |
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134 } |
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135 |
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136 if (from > to) { |
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137 step = -step; |
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138 } |
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139 |
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140 QPosition [] qPositions = new QPosition[numResults]; |
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141 |
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142 Function [] functions = new Function[numResults]; |
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143 |
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144 double [] out = new double[2]; |
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145 |
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146 Segment sentinel = new Segment(Double.MAX_VALUE); |
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147 Segment s1 = sentinel, s2 = sentinel; |
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148 |
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149 for (double pos = from; |
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150 from < to ? pos <= to : pos >= to; |
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151 pos = DoubleUtil.round(pos + step) |
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152 ) { |
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153 if (pos < s1.referencePoint || pos > s2.referencePoint) { |
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154 if (debug) { |
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155 logger.debug("need to find new interval for " + pos); |
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156 } |
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157 // find new interval |
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158 if (pos <= segments.get(0).referencePoint) { |
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159 // before first segment -> "gleichwertig" |
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160 if (debug) { |
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161 logger.debug("before first segment -> gleichwertig"); |
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162 } |
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163 Segment first = segments.get(0); |
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164 double [] values = first.values; |
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165 double refPos = first.referencePoint; |
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166 for (int i = 0; i < qPositions.length; ++i) { |
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167 qPositions[i] = table.getQPosition( |
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168 refPos, values[i]); |
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169 } |
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170 sentinel.setReferencePoint(-Double.MAX_VALUE); |
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171 s1 = sentinel; |
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172 s2 = segments.get(0); |
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173 Arrays.fill(functions, Identity.IDENTITY); |
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174 } |
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175 else if (pos >= segments.get(segments.size()-1).referencePoint) { |
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176 // after last segment -> "gleichwertig" |
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177 if (debug) { |
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178 logger.debug("after last segment -> gleichwertig"); |
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179 } |
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180 Segment last = segments.get(segments.size()-1); |
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181 double [] values = last.values; |
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182 double refPos = last.referencePoint; |
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183 for (int i = 0; i < qPositions.length; ++i) { |
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184 qPositions[i] = table.getQPosition( |
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185 refPos, values[i]); |
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186 } |
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187 sentinel.setReferencePoint(Double.MAX_VALUE); |
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188 s1 = last; |
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189 s2 = sentinel; |
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190 Arrays.fill(functions, Identity.IDENTITY); |
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191 } |
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192 else { // "ungleichwertig" |
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193 // find matching interval |
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194 if (debug) { |
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195 logger.debug("in segments -> ungleichwertig"); |
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196 } |
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197 s1 = s2 = null; |
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198 for (int i = 1, N = segments.size(); i < N; ++i) { |
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199 Segment si1 = segments.get(i-1); |
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200 Segment si = segments.get(i); |
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201 if (debug) { |
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202 logger.debug("check " + pos + " in " + |
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203 si1.referencePoint + " - " + si.referencePoint); |
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204 } |
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205 if (pos >= si1.referencePoint |
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206 && pos <= si. referencePoint) { |
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207 s1 = si1; |
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208 s2 = si; |
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209 break; |
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210 } |
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211 } |
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212 |
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213 if (s1 == null) { |
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214 throw new IllegalStateException("no interval found"); |
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215 } |
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216 |
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217 Segment anchor, free; |
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218 |
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219 if (from > to) { anchor = s1; free = s2; } |
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220 else { anchor = s2; free = s1; } |
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221 |
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222 // build transforms based on "gleichwertiger" phase |
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223 for (int i = 0; i < qPositions.length; ++i) { |
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224 QPosition qi = table.getQPosition( |
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225 anchor.referencePoint, |
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226 anchor.values[i]); |
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227 |
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228 if ((qPositions[i] = qi) == null) { |
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229 // TODO: I18N |
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230 addProblem(pos, "cannot find q = " + anchor.values[i]); |
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231 functions[i] = Identity.IDENTITY; |
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232 } |
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233 else { |
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234 double qA = table.getQ(qi, anchor.referencePoint); |
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235 double qF = table.getQ(qi, free .referencePoint); |
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236 |
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237 functions[i] = Double.isNaN(qA) || Double.isNaN(qF) |
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238 ? Identity.IDENTITY |
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239 : new Linear( |
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240 qA, qF, |
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241 anchor.values[i], free.values[i]); |
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242 |
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243 if (debug) { |
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244 logger.debug( |
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245 anchor.referencePoint + ": " + |
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246 qA + " -> " + functions[i].value(qA) + |
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247 " / " + free.referencePoint + ": " + |
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248 qF + " -> " + functions[i].value(qF)); |
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249 } |
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250 } |
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251 } // build transforms |
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252 } // "ungleichwertiges" interval |
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253 } // find matching interval |
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254 |
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255 for (int i = 0; i < qPositions.length; ++i) { |
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256 QPosition qPosition = qPositions[i]; |
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257 |
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258 if (qPosition == null) { |
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259 continue; |
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260 } |
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261 |
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262 if (table.interpolate(pos, out, qPosition, functions[i])) { |
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263 results[i].add(out[0], out[1], pos); |
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264 } |
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265 else { |
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266 // TODO: I18N |
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267 addProblem(pos, "cannot interpolate w/q"); |
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268 } |
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269 } |
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270 } |
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271 |
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272 // Backjump correction |
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273 for (int i = 0; i < results.length; ++i) { |
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274 BackJumpCorrector bjc = new BackJumpCorrector(); |
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275 |
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276 double [] ws = results[i].getWs(); |
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277 double [] kms = results[i].getKms(); |
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278 |
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279 if (bjc.doCorrection(kms, ws, this)) { |
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280 results[i] = new WQCKms(results[i], bjc.getCorrected()); |
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281 } |
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282 } |
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283 |
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284 // name the curves |
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285 for (int i = 0; i < results.length; ++i) { |
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286 results[i].setName(createName(i)); |
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287 } |
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288 |
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289 return new CalculationResult(results, this); |
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290 } |
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291 |
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292 protected String createName(int index) { |
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293 // TODO: I18N |
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294 StringBuilder sb = new StringBuilder(isQ ? "Q" : "W"); |
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295 sb.append(" benutzerdefiniert ("); |
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296 for (int i = 0, N = segments.size(); i < N; ++i) { |
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297 if (i > 0) { |
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298 sb.append("; "); |
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299 } |
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300 Segment segment = segments.get(i); |
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301 sb.append((segment.backup != null |
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302 ? segment.backup |
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303 : segment.values)[index]); |
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304 } |
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305 sb.append(')'); |
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306 return sb.toString(); |
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307 } |
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308 } |
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309 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |