Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/FlowVelocityCalculation.java @ 6152:0587819960c3

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Waterlevel differences & bed height differences: Add new model LinearInterpolated intented to unify the two very similiar calculations. The focus of the current implementation is correctness and not speed! The fact that the data sets more mostly sorted by station is not exploited. Doing so would improve performance significantly.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 02 Jun 2013 17:52:53 +0200
parents af13ceeba52a
children a56fe3bc6700
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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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.artifacts.model;
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10
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11 import org.dive4elements.artifacts.Artifact;
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12
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13 import org.dive4elements.river.artifacts.access.FlowVelocityAccess;
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14
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15 import org.dive4elements.river.model.DischargeZone;
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16 import org.dive4elements.river.model.FlowVelocityModel;
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17 import org.dive4elements.river.model.FlowVelocityModelValue;
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18
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19 import java.util.ArrayList;
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20 import java.util.Collections;
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21 import java.util.List;
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22
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23 import org.apache.log4j.Logger;
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24
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25
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26 /** Calculate flow velocity. */
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27 public class FlowVelocityCalculation extends Calculation {
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28
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29 /** Own logger. */
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30 private static final Logger logger =
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31 Logger.getLogger(FlowVelocityCalculation.class);
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32
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33
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34 public CalculationResult calculate(FlowVelocityAccess access) {
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35 logger.info("FlowVelocityCalculation.calculate");
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36
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37 int[] mainIds = access.getMainChannels();
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38 int[] totalIds = access.getTotalChannels();
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39
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40 if (logger.isDebugEnabled()) {
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41 Artifact a = access.getArtifact();
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42 logger.debug("Artifact '" + a.identifier() + "' contains:");
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43 if (mainIds != null) {
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44 logger.debug(" " + mainIds.length + " main channel ids");
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45 }
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46
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47 if (totalIds != null) {
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48 logger.debug(" " + totalIds.length + " total channel ids");
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49 }
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50 }
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51
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52 List<DischargeZone> zones = getDischargeZones(mainIds, totalIds);
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53 List<FlowVelocityModel> models = getFlowVelocityModels(access, zones);
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54
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55 return buildCalculationResult(access, models);
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56 }
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57
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58
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59 protected List<DischargeZone> getDischargeZones(
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60 int[] mainIds,
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61 int[] totalIds
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62 ) {
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63 List<DischargeZone> zones = new ArrayList<DischargeZone>();
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64
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65 if (mainIds != null) {
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66 for (int id: mainIds) {
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67 DischargeZone zone = DischargeZone.getDischargeZoneById(id);
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68 zone.putType("main");
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69
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70 if (zone != null) {
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71 zones.add(zone);
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72 }
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73 }
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74 }
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75
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76 if (totalIds != null) {
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77 for (int id: totalIds) {
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78 DischargeZone zone = DischargeZone.getDischargeZoneById(id);
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79 if (zone != null) {
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80 int ndx = zones.indexOf(zone);
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81 if (zones.contains(zone) &&
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82 zones.get(ndx).fetchType().equals("main")) {
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83 zone.putType("main_total");
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84 }
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85 else {
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86 zone.putType("total");
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87 zones.add(zone);
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88 }
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89 }
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90 }
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91 }
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92
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93 return zones;
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94 }
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95
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96
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97 protected List<FlowVelocityModel> getFlowVelocityModels(
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98 FlowVelocityAccess access,
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99 List<DischargeZone> zones
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100 ) {
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101 String riverName = access.getRiver();
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102 if (riverName == null) {
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103 logger.warn("No river name found");
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104 return Collections.<FlowVelocityModel>emptyList();
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105 }
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106
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107 List<FlowVelocityModel> models = new ArrayList<FlowVelocityModel>();
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108
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109 for (DischargeZone zone: zones) {
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110 List<FlowVelocityModel> model = FlowVelocityModel.getModels(zone);
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111 models.addAll(model);
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112 }
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113
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114 return models;
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115 }
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116
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117
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118 protected void prepareData(
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119 FlowVelocityData data,
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120 FlowVelocityModel model,
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121 double kmLo,
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122 double kmHi
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123 ) {
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124 List<FlowVelocityModelValue> values =
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125 FlowVelocityModelValue.getValues(model, kmLo, kmHi);
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126
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127 logger.debug("Found " + values.size() + " values for model.");
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128
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129 for (FlowVelocityModelValue value: values) {
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130 data.addKM(value.getStation().doubleValue());
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131 data.addQ(value.getQ().doubleValue());
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132 data.addVTotal(value.getTotalChannel().doubleValue());
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133 data.addVMain(value.getMainChannel().doubleValue());
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134 data.addTauMain(value.getShearStress().doubleValue());
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135 }
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136
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137 DischargeZone zone = model.getDischargeZone();
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138 String lo = zone.getLowerDischarge();
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139 String hi = zone.getUpperDischarge();
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140
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Raimund Renkert <rrenkert@intevation.de>
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141 data.setType(zone.fetchType());
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142 if (lo.equals(hi)) {
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143 data.setZone(lo);
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144 }
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145 else {
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146 data.setZone(lo + " - " + hi);
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147 }
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148 }
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149
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150
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151 protected CalculationResult buildCalculationResult(
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
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152 FlowVelocityAccess access,
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153 List<FlowVelocityModel> models
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154 ) {
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155 double kmLo = access.getLowerKM();
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156 double kmHi = access.getUpperKM();
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157
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158 logger.debug("Prepare data for km range: " + kmLo + " - " + kmHi);
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159
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160 FlowVelocityData[] data = new FlowVelocityData[models.size()];
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161 for (int i = 0, n = models.size(); i < n; i++) {
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162 FlowVelocityData d = new FlowVelocityData();
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163
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164 prepareData(d, models.get(i), kmLo, kmHi);
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165
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166 data[i] = d;
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167 }
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168
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169 logger.debug("Calculation contains " + data.length + " data items.");
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170
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171 return new CalculationResult(data, this);
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172 }
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173 }
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174 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org