Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadData.java @ 8139:1e8812b996bc
Sediment load: Remove simple tail recursive calls from SedimentLoadData.recursiveFindStations(). More carefully this time.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Tue, 26 Aug 2014 11:28:03 +0200 |
parents | bbad52b073a4 |
children | 369fbb28f5d0 |
rev | line source |
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8033
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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1 /* Copyright (C) 2014 by Bundesanstalt für Gewässerkunde |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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2 * Software engineering by Intevation GmbH |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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3 * |
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Sascha L. Teichmann <teichmann@intevation.de>
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4 * This file is Free Software under the GNU AGPL (>=v3) |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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6 * documentation coming with Dive4Elements River for details. |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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7 */ |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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8 package org.dive4elements.river.artifacts.model.minfo; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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9 |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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10 import java.io.Serializable; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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parents:
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11 import java.util.ArrayList; |
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Wire the neighbors to the measurement stations together. This eases the lookup for same types (suspended or bed load).
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12 import java.util.Collection; |
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Throw out old visitor model and use grain fraction filters instead. Fixed neighborhood wirinng of measument stations.
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13 import java.util.Collections; |
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Sediment load: Merge measurement stations if they have the same km. The chaining was too complicated to build algorithms on top of it.
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14 import java.util.Comparator; |
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15 import java.util.Date; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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16 import java.util.List; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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17 import java.util.TreeMap; |
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Sediment load: Fixed findStations() and add findLoads().
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18 import java.util.TreeSet; |
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Sascha L. Teichmann <teichmann@intevation.de>
parents:
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19 |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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20 import org.dive4elements.river.utils.EpsilonComparator; |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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changeset
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21 |
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Sascha L. Teichmann <teichmann@intevation.de>
parents:
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22 public class SedimentLoadData implements Serializable |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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23 { |
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Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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24 public static final int GF_UNKNOWN = -1; |
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25 public static final int GF_COARSE = 0; |
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26 public static final int GF_FINE_MIDDLE = 1; |
01ad09af0975
Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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27 public static final int GF_SAND = 2; |
01ad09af0975
Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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28 public static final int GF_SUSP_SAND = 3; |
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29 public static final int GF_SUSP_SAND_BED = 4; |
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30 public static final int GF_SUSP_SEDIMENT = 5; |
01ad09af0975
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31 public static final int GF_TOTAL = 6; |
01ad09af0975
Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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32 public static final int GF_BED_LOAD = 7; |
01ad09af0975
Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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33 public static final int GF_SUSPENDED_LOAD = 8; |
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Use old names for SedimentloadDataFractions and add average fraction
Andre Heinecke <andre.heinecke@intevation.de>
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34 public static final int GF_AVERAGE = 9; |
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Use old names for SedimentloadDataFractions and add average fraction
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35 public static final int GF_MAX = 9; |
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parents:
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36 |
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37 public static final int [] MEASUREMENT_STATION_GF = { |
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Sediment Load: Added table to figure out where grain fractions are measured.
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38 /* GF_COARSE */ Station.BED_LOAD, |
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Sediment Load: Added table to figure out where grain fractions are measured.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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39 /* GF_FINE_MIDDLE */ Station.BED_LOAD, |
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parents:
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40 /* GF_SAND */ Station.BED_LOAD, |
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Sediment Load: Added table to figure out where grain fractions are measured.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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41 /* GF_SUSP_SAND */ Station.BED_LOAD, |
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parents:
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42 /* GF_SUSP_SAND_BED */ Station.BED_LOAD, |
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43 /* GF_SUSP_SEDIMENT */ Station.SUSPENDED, |
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44 /* GF_TOTAL */ Station.BED_LOAD|Station.SUSPENDED, |
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45 /* GF_BED_LOAD */ Station.BED_LOAD, |
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46 /* GF_SUSPENDED_LOAD */ Station.BED_LOAD |
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47 }; |
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parents:
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48 |
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49 public static final int measurementStationType(int grainFraction) { |
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50 return grainFraction < 0 || grainFraction >= MEASUREMENT_STATION_GF.length |
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51 ? Station.UNKNOWN |
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52 : MEASUREMENT_STATION_GF[grainFraction]; |
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parents:
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53 } |
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Sediment Load: Added table to figure out where grain fractions are measured.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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54 |
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55 public static final int grainFractionIndex(String name) { |
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56 if ("coarse".equals(name)) return GF_COARSE; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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57 if ("fine_middle".equals(name)) return GF_FINE_MIDDLE; |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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58 if ("sand".equals(name)) return GF_SAND; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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59 if ("susp_sand".equals(name)) return GF_SUSP_SAND; |
5e3f4b4fcb28
New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
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60 if ("susp_sand_bed".equals(name)) return GF_SUSP_SAND_BED; |
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61 if ("suspended_sediment".equals(name)) return GF_SUSP_SEDIMENT; |
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62 if ("total".equals(name)) return GF_TOTAL; |
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63 if ("bed_load".equals(name)) return GF_BED_LOAD; |
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64 if ("suspended_load".equals(name)) return GF_SUSPENDED_LOAD; |
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65 if ("average".equals(name)) return GF_AVERAGE; |
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66 return GF_UNKNOWN; |
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67 } |
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parents:
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68 |
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69 public interface Visitor { |
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70 void visit(Station station); |
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parents:
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71 } |
17542d100e75
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Sascha L. Teichmann <teichmann@intevation.de>
parents:
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72 |
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73 public static class Value implements Serializable { |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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74 |
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parents:
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75 public interface Filter { |
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76 boolean accept(Value value); |
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77 } |
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parents:
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78 |
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79 public interface Visitor { |
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80 void visit(Value value); |
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Sediment load: Added join to fetch measurement station via ranges which know the river. Added a visitor for values, too.
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parents:
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81 } |
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parents:
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82 |
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83 private double value; |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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parents:
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84 |
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85 private Load load; |
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86 |
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parents:
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87 public Value() { |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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88 } |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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89 |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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90 public Value(Load load, double value) { |
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91 this.load = load; |
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92 this.value = value; |
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93 } |
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94 |
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95 public double getValue() { |
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96 return value; |
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97 } |
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98 |
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99 public Load getLoad() { |
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100 return load; |
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101 } |
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102 } // class Value |
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103 |
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104 |
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105 public static class Load implements Serializable { |
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106 |
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107 private int id; |
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108 private int kind; |
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109 |
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110 private String description; |
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111 |
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112 private Date startTime; |
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113 private Date stopTime; |
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114 |
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115 public Load() { |
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116 } |
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117 |
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118 public Load( |
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119 int id, |
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120 int kind, |
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121 String description, |
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122 Date startTime, |
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123 Date stopTime |
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124 ) { |
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125 this.id = id; |
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126 this.kind = kind; |
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127 this.description = description; |
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128 this.startTime = startTime; |
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129 this.stopTime = stopTime; |
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130 } |
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131 |
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132 public int getId() { |
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133 return id; |
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134 } |
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135 |
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136 public int getKind() { |
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137 return kind; |
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138 } |
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139 |
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140 public String getDescription() { |
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141 return description; |
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142 } |
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143 |
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144 public Date getStartTime() { |
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145 return startTime; |
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146 } |
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147 |
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148 public Date getStopTime() { |
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149 return stopTime; |
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150 } |
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151 |
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152 public boolean isEpoch() { |
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153 return startTime != null && stopTime != null; |
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154 } |
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155 } // class SedimentLoad |
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156 |
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157 public static class Station implements Serializable { |
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158 |
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159 public static final int UNKNOWN = 0; |
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Sediment load: Merge measurement stations if they have the same km. The chaining was too complicated to build algorithms on top of it.
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160 public static final int BED_LOAD = 1; |
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161 public static final int SUSPENDED = 2; |
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162 |
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163 private double station; |
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164 |
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165 private int type; |
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166 |
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167 private List<List<Value>> grainFractions; |
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168 |
8034
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169 private Station next; |
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170 private Station prev; |
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171 |
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172 public Station() { |
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173 this(BED_LOAD, 0.0); |
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174 } |
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175 |
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176 public Station(int type, double station) { |
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177 grainFractions = new ArrayList<List<Value>>(GF_MAX+1); |
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178 for (int i = 0; i < GF_MAX+1; ++i) { |
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Throw out old visitor model and use grain fraction filters instead. Fixed neighborhood wirinng of measument stations.
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179 grainFractions.add(null); |
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180 } |
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181 this.type = type; |
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182 this.station = station; |
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183 } |
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184 |
8123
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Sediment load: Fixed findStations() and add findLoads().
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|
185 public void allLoads(Collection<Load> loads) { |
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Sediment load: Fixed findStations() and add findLoads().
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186 for (List<Value> values: grainFractions) { |
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187 if (values != null) { |
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188 for (Value value: values) { |
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189 loads.add(value.getLoad()); |
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190 } |
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191 } |
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192 } |
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193 } |
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194 |
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195 public double getStation() { |
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196 return station; |
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197 } |
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198 |
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199 public int getType() { |
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200 return type; |
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201 } |
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202 |
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203 public boolean isType(int type) { |
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204 return (this.type & type) != 0; |
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205 } |
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206 |
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207 public void setNext(Station next) { |
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208 this.next = next; |
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209 } |
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210 |
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211 public Station getNext() { |
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212 return next; |
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213 } |
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214 |
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215 public void setPrev(Station prev) { |
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216 this.prev = next; |
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217 } |
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218 |
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219 public Station getPrev() { |
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220 return prev; |
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221 } |
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222 |
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223 public Station getNext(boolean isKMUp) { |
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224 return isKMUp ? getNext() : getPrev(); |
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225 } |
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226 |
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227 public Station getPrev(boolean isKMUp) { |
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228 return isKMUp ? getPrev() : getNext(); |
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229 } |
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230 |
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231 public void merge(Station other) { |
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232 this.type |= other.type; |
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233 for (int i = 0, N = grainFractions.size(); i < N; ++i) { |
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234 grainFractions.set(i, |
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235 mergeValues(grainFractions.get(i), other.grainFractions.get(i))); |
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236 } |
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237 } |
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238 |
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239 private static final Comparator<Value> ID_CMP = new Comparator<Value>() { |
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240 @Override |
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241 public int compare(Value a, Value b) { |
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242 return a.getLoad().getId() - b.getLoad().getId(); |
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243 } |
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244 }; |
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245 |
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246 private static List<Value> mergeValues(List<Value> a, List<Value> b) { |
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247 if (a == null) return b; |
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248 if (b == null) return a; |
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249 a.addAll(b); |
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250 // re-establish id order. |
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251 Collections.sort(a, ID_CMP); |
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252 return a; |
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253 } |
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254 |
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255 public Station nextByType(int type, boolean isKMUp) { |
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256 for (Station curr = this; curr != null; curr = curr.getNext(isKMUp)) { |
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257 if (curr.isType(type)) { |
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258 return curr; |
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259 } |
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260 } |
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261 return null; |
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262 } |
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263 |
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264 public Station prevByType(int type, boolean isKMUp) { |
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265 for (Station curr = this; curr != null; curr = curr.getPrev(isKMUp)) { |
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266 if (curr.isType(type)) { |
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267 return curr; |
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268 } |
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269 } |
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270 return null; |
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271 } |
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272 |
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273 public void addValue(int grainFraction, Value value) { |
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274 List<Value> values = grainFractions.get(grainFraction); |
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275 if (values == null) { |
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276 values = new ArrayList<Value>(); |
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277 grainFractions.set(grainFraction, values); |
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278 } |
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279 values.add(value); |
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280 } |
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281 |
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282 public boolean hasGrainFraction(String grainFraction) { |
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283 return hasGrainFraction(grainFractionIndex(grainFraction)); |
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284 } |
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285 |
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286 public boolean hasGrainFraction(int grainFraction) { |
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287 List<Value> values = grainFractions.get(grainFraction); |
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288 return values != null && !values.isEmpty(); |
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289 } |
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290 |
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291 public void filterGrainFraction( |
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292 int grainFraction, |
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293 Value.Filter filter, |
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294 Value.Visitor visitor |
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295 ) { |
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296 List<Value> values = grainFractions.get(grainFraction); |
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297 if (values != null && !values.isEmpty()) { |
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298 for (Value value: values) { |
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299 if (filter.accept(value)) { |
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300 visitor.visit(value); |
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301 } |
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302 } |
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303 } |
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304 } |
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305 |
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306 public List<Value> filterGrainFraction(int grainFraction, Value.Filter filter) { |
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307 final List<Value> result = new ArrayList<Value>(); |
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308 filterGrainFraction(grainFraction, filter, new Value.Visitor() { |
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309 @Override |
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310 public void visit(Value value) { |
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311 result.add(value); |
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312 } |
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313 }); |
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314 return result; |
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315 } |
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316 |
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317 public double findValueByLoadId(int id) { |
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318 for (List<Value> values: grainFractions) { |
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319 double value = findValueByLoadId(values, id); |
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320 if (!Double.isNaN(value)) { |
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321 return value; |
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322 } |
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323 } |
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324 return Double.NaN; |
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325 } |
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326 |
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327 private static final double findValueByLoadId( |
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328 List<Value> values, |
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329 int id |
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330 ) { |
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331 if (values == null) { |
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332 return Double.NaN; |
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333 } |
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334 // List is ordered by station id -> binary search. |
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335 int lo = 0, hi = values.size()-1; |
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336 while (lo <= hi) { |
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337 int mid = (lo + hi)/2; |
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338 Value v = values.get(mid); |
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339 int xid = v.getLoad().getId(); |
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340 if (xid > id) hi = mid-1; |
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341 else if (xid < id) lo = mid+1; |
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342 else return v.getValue(); |
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343 } |
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344 |
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345 return Double.NaN; |
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346 } |
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347 } // class Station |
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348 |
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349 |
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350 private Station [] stations; |
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351 |
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352 public SedimentLoadData() { |
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353 } |
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354 |
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355 public SedimentLoadData(Collection<Station> stations) { |
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356 setStations(stations); |
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357 } |
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358 |
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359 public Station[] getStations() { |
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360 return stations; |
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361 } |
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362 |
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363 public void setStations(Collection<Station> stations) { |
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364 TreeMap<Double, Station> same = |
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365 new TreeMap<Double, Station>(EpsilonComparator.CMP); |
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366 |
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367 for (Station station: stations) { |
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368 Double key = station.getStation(); |
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369 Station st = same.get(key); |
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370 if (st == null) { |
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371 same.put(key, station); |
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372 } else { |
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Sediment load: Merge measurement stations if they have the same km. The chaining was too complicated to build algorithms on top of it.
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373 st.merge(station); |
8034
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374 } |
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375 } |
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376 this.stations = new Station[same.size()]; |
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377 int i = 0; |
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378 for (Station station: same.values()) { |
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379 this.stations[i++] = station; |
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380 } |
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381 wireNeighbors(); |
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382 } |
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383 |
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384 private void wireNeighbors() { |
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385 for (int i = 1; i < stations.length; ++i) { |
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386 stations[i-1].setNext(stations[i]); |
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387 stations[i].setPrev(stations[i-1]); |
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388 } |
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389 } |
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390 |
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391 private void recursiveFindStations( |
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392 double a, double b, |
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393 int lo, int hi, |
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394 Visitor visitor |
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395 ) { |
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396 while (lo <= hi) { |
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397 int mid = (lo+hi)/2; |
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398 Station st = stations[mid]; |
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399 double station = st.getStation(); |
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400 if (station < a) { |
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401 lo = mid+1; |
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402 } else if (station > b) { |
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403 hi = mid-1; |
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404 } else { |
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405 recursiveFindStations(a, b, lo, mid-1, visitor); |
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406 visitor.visit(st); |
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407 lo = mid+1; |
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408 } |
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409 } |
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410 } |
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411 |
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412 public static final Comparator<Load> LOAD_ID_CMP = new Comparator<Load>() { |
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413 @Override |
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414 public int compare(Load a, Load b) { |
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415 return a.getId() - b.getId(); |
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416 } |
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417 }; |
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418 |
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419 public Collection<Load> findLoads(double a, double b) { |
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420 final TreeSet loads = new TreeSet<Load>(LOAD_ID_CMP); |
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421 |
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422 findStations(a, b, new Visitor() { |
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423 @Override |
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424 public void visit(Station station) { |
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425 station.allLoads(loads); |
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426 } |
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427 }); |
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428 |
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429 return loads; |
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430 } |
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431 |
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432 public void findStations(double a, double b, Visitor visitor) { |
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433 if (a > b) { |
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434 double t = a; a = b; b = t; |
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435 } |
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436 recursiveFindStations(a, b, 0, stations.length-1, visitor); |
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437 } |
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438 |
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439 public List<Station> findStations(double a, double b) { |
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440 final List<Station> result = new ArrayList<Station>(); |
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441 findStations(a, b, new Visitor() { |
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442 @Override |
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443 public void visit(Station station) { |
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444 result.add(station); |
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445 } |
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446 }); |
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447 return result; |
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448 } |
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449 } |
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450 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |