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annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/FlowDepthCalculator.java @ 8915:d9dbf0b74bc2

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Refaktoring of flow depth calculation, extracting tkh part. First implementation of tkh calculation.
author gernotbelger
date Wed, 28 Feb 2018 17:27:15 +0100
parents
children 82998242ba84
rev   line source
8915
d9dbf0b74bc2 Refaktoring of flow depth calculation, extracting tkh part. First implementation of tkh calculation.
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.artifacts.sinfo.flowdepth;
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11
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12 import java.util.ArrayList;
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13 import java.util.Collection;
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14
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15 import org.apache.commons.lang.math.DoubleRange;
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16 import org.apache.commons.math.FunctionEvaluationException;
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17 import org.apache.commons.math.analysis.polynomials.PolynomialSplineFunction;
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18 import org.dive4elements.river.artifacts.model.WKms;
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19 import org.dive4elements.river.artifacts.sinfo.common.RiverInfoProvider;
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20 import org.dive4elements.river.artifacts.sinfo.tkhcalculation.DischargeValuesFinder;
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21 import org.dive4elements.river.artifacts.sinfo.tkhcalculation.SoilKind;
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22 import org.dive4elements.river.artifacts.sinfo.tkhcalculation.Tkh;
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23 import org.dive4elements.river.artifacts.sinfo.tkhcalculation.TkhCalculator;
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24 import org.dive4elements.river.artifacts.sinfo.tkhstate.BedHeightsFinder;
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25 import org.dive4elements.river.artifacts.sinfo.util.WstInfo;
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26 import org.dive4elements.river.utils.DoubleUtil;
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27
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28 /**
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29 * @author Gernot Belger
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30 */
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31 final class FlowDepthCalculator {
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32
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33 private final Collection<FlowDepthRow> rows = new ArrayList<>();
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34
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35 private final DischargeValuesFinder dischargeProvider;
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36
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37 private final BedHeightsFinder bedHeight;
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38
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39 private final TkhCalculator tkhCalculator;
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40
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41 private final PolynomialSplineFunction wstInterpolator;
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42
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43 private final RiverInfoProvider riverInfoProvider;
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44
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45 private final String bedHeightLabel;
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46
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47 private final String wstLabel;
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48
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49 public FlowDepthCalculator(final RiverInfoProvider riverInfoProvider, final WKms wstKms,
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50 final DischargeValuesFinder dischargeProvider, final BedHeightsFinder bedHeight, final TkhCalculator tkhCalculator) {
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51
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52 this.riverInfoProvider = riverInfoProvider;
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53
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54 this.dischargeProvider = dischargeProvider;
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55 this.bedHeight = bedHeight;
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56 this.tkhCalculator = tkhCalculator;
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57
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58 this.wstInterpolator = DoubleUtil.getLinearInterpolator(wstKms.allKms(), wstKms.allWs());
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59
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60 this.bedHeightLabel = bedHeight.getInfo().getDescription();
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61 this.wstLabel = wstKms.getName();
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62 }
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63
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64 public FlowDepthCalculationResult execute(final String label, final WstInfo wstInfo, final DoubleRange calcRange) {
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65
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66 final Collection<Double> stations = this.bedHeight.getStations();
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67 for (final Double station : stations) {
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68 if (calcRange.containsDouble(station))
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69 calculateResultRow(station);
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70 }
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71
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72 return new FlowDepthCalculationResult(label, wstInfo, this.bedHeight.getInfo(), this.tkhCalculator != null, this.rows);
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73 }
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74
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75 private void calculateResultRow(final double station) {
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76
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77 try {
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78 // FIXME: check out of range of waterlevel?
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79 final double wst = this.wstInterpolator.value(station);
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80
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81 final Tkh tkh = calculateTkh(station, wst);
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82
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83 final double meanBedHeight = tkh.getMeanBedHeight();
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84
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85 final double flowDepth = wst - meanBedHeight;
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86 final double flowDepthTkh = calculateFlowDepthTkh(tkh, wst, meanBedHeight);
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87
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88 // REMARK: access the location once only during calculation
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89 final String location = this.riverInfoProvider.getLocation(station);
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90
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91 // REMARK: access the gauge once only during calculation
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92 final String gaugeLabel = this.riverInfoProvider.findGauge(station);
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93
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94 this.rows.add(new FlowDepthRow(flowDepth, flowDepthTkh, tkh, this.wstLabel, gaugeLabel, this.bedHeightLabel, location));
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95 }
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96 catch (final FunctionEvaluationException e) {
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97 /* should only happen if out of range */
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98 e.printStackTrace();
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99 /* simply ignore */
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100 }
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101 }
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102
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103 private Tkh calculateTkh(final double station, final double wst) throws FunctionEvaluationException {
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104 if (this.tkhCalculator == null) {
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105 final double discharge = this.dischargeProvider.getDischarge(station);
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106 final double meanBedHeight = this.bedHeight.getMeanBedHeight(station);
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107 return new Tkh(station, wst, meanBedHeight, discharge);
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108 }
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109
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110 return this.tkhCalculator.getTkh(station, wst);
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111 }
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112
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113 private double calculateFlowDepthTkh(final Tkh tkh, final double wst, final double meanBedHeight) {
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114 final double tkhValue = tkh.getTkh();
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115 final SoilKind tkhKind = tkh.getKind();
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116
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117 if (Double.isNaN(tkhValue) || tkhKind == null)
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118 return Double.NaN;
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119
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120 switch (tkhKind) {
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121 case starr:
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122 return wst - (meanBedHeight + tkhValue / 100);
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123
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124 case mobil:
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125 default:
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126 return wst - (meanBedHeight + tkhValue / 200);
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127 }
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128 }
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129 }
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