Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/DischargeTables.java @ 8202:e4606eae8ea5

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sed src/**/*.java 's/logger/log/g'
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 05 Sep 2014 12:58:17 +0200
parents 20a32dbdbb59
children 0a5239a1e46e
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model;
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10
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11 import java.util.List;
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12 import java.util.Map;
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13 import java.util.HashMap;
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14 import java.util.Arrays;
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15
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16 import java.io.Serializable;
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17
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18 import org.hibernate.Session;
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19 import org.hibernate.Query;
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21 import org.apache.log4j.Logger;
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22
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23 import org.dive4elements.river.backend.SessionHolder;
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24 import org.dive4elements.river.model.Gauge;
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25 import org.dive4elements.river.model.DischargeTable;
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26 import org.dive4elements.river.model.DischargeTableValue;
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27
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28 import gnu.trove.TDoubleArrayList;
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29
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30 /** Documentation goes here. */
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31 public class DischargeTables
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32 implements Serializable
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33 {
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34 /** Private log. */
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35 private static Logger log = Logger.getLogger(DischargeTables.class);
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36
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37 public static final int MASTER = 0;
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38
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39 protected List<String> gaugeNames;
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40
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41 protected String riverName;
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42
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43 protected int kind;
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44
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45 protected Map<String, double [][]> values;
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46
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47 public DischargeTables() {
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48 }
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49
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50 public DischargeTables(String riverName, String gaugeName) {
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51 this(riverName, gaugeName, MASTER);
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52 }
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53
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54 public DischargeTables(String riverName, String gaugeName, int kind) {
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55 this(riverName, new String [] { gaugeName }, kind);
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56 }
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57
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58 public DischargeTables(String riverName, String [] gaugeNames) {
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59 this(riverName, gaugeNames, MASTER);
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60 }
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61
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62 public DischargeTables(String riverName, String [] gaugeNames, int kind) {
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63 this(riverName, Arrays.asList(gaugeNames), kind);
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64 }
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65
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66 public DischargeTables(
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67 String riverName,
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68 List<String> gaugeNames,
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69 int kind
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70 ) {
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71 this.kind = kind;
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72 this.riverName = riverName;
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73 this.gaugeNames = gaugeNames;
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74 }
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75
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76 public double [][] getFirstTable() {
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77 Map<String, double [][]> values = getValues();
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78 for (double [][] table: values.values()) {
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79 return table;
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80 }
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81 return null;
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82 }
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83
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84 public Map<String, double [][]> getValues() {
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85 if (values == null) {
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86 values = loadValues();
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87 }
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88 return values;
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89 }
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90
1929
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91 /**
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92 * Returns mapping of gauge name to values.
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93 */
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94 protected Map<String, double [][]> loadValues() {
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95 Map<String, double [][]> values = new HashMap<String, double [][]>();
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96
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97 Session session = SessionHolder.HOLDER.get();
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98
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99 Query gaugeQuery = session.createQuery(
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100 "from Gauge where name=:gauge and river.name=:river");
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101 gaugeQuery.setParameter("river", riverName);
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102
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103 for (String gaugeName: gaugeNames) {
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104 gaugeQuery.setParameter("gauge", gaugeName);
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105 List<Gauge> gauges = gaugeQuery.list();
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106 if (gauges.isEmpty()) {
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107 log.warn(
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108 "no gauge '"+gaugeName+"' at river '"+riverName+"'");
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109 continue;
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110 }
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111 Gauge gauge = gauges.get(0);
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112
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113 List<DischargeTable> tables = gauge.getDischargeTables();
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114
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115 if (tables.isEmpty()) {
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116 log.warn(
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117 "no discharge table for gauge '" + gaugeName + "'");
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118 continue;
146
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parents:
diff changeset
119 }
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
diff changeset
120
311
ea3a438a7021 Backend access: Static methods are using the SessionHolder, too.
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parents: 154
diff changeset
121 // TODO: Filter by time interval
4919
dbe9b7d6b80b Find correct discharge table for gauge.
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122 DischargeTable table = null;
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
123 for (DischargeTable dt : tables) {
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
124 if (dt.getKind() == 0) {
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
125 table = dt;
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
126 break;
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
127 }
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
128 }
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
129 if (table == null) {
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
130 table = tables.get(0);
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
131 }
6301
20a32dbdbb59 Remove discharge table scaling but add reference system to W
Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
132 double [][] vs = loadDischargeTableValues(table);
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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133
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diff changeset
134 values.put(gaugeName, vs);
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
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135 }
311
ea3a438a7021 Backend access: Static methods are using the SessionHolder, too.
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diff changeset
136
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diff changeset
137 return values;
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
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138 }
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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139
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
140
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
141 /**
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
142 * @param table The discharge table
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
143 *
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
144 * @return the values of a discharge table.
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
145 */
6301
20a32dbdbb59 Remove discharge table scaling but add reference system to W
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
146 public static double[][] loadDischargeTableValues(DischargeTable table) {
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
147 List<DischargeTableValue> dtvs = table.getDischargeTableValues();
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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diff changeset
148
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
149 final double [][] vs = new double[2][dtvs.size()];
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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diff changeset
150
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
151 int idx = 0;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
152 for (DischargeTableValue dtv: dtvs) {
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
153 double q = dtv.getQ().doubleValue();
6301
20a32dbdbb59 Remove discharge table scaling but add reference system to W
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diff changeset
154 vs[0][idx] = q;
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Andre Heinecke <aheinecke@intevation.de>
parents: 5994
diff changeset
155 vs[1][idx] = dtv.getW().doubleValue();
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
156 ++idx;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
157 }
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
158
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
159 return vs;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
160 }
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
161
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diff changeset
162 private static final double EPSILON = 1e-5;
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
163
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diff changeset
164 private static final boolean epsEquals(double a, double b) {
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diff changeset
165 return Math.abs(a - b) < EPSILON;
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diff changeset
166 }
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diff changeset
167
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diff changeset
168 private static final boolean between(double a, double b, double x) {
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diff changeset
169 if (a > b) { double t = a; a = b; b = t; }
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diff changeset
170 return x > a && x < b;
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diff changeset
171 }
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diff changeset
172
5340
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
173 /**
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
174 * Find or interpolate Qs from q/w array.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
175 * @param values [[q0,q1,q2],[w0,w1,w2]]
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
176 * @param w W value to look for in values.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
177 */
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diff changeset
178 public static double [] getQsForW(double [][] values, double w) {
378
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
179
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
180 boolean debug = log.isDebugEnabled();
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
181
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
182 if (debug) {
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parents: 2230
diff changeset
183 log.debug("getQsForW: W = " + w);
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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parents: 328
diff changeset
184 }
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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parents: 328
diff changeset
185
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diff changeset
186 double [] qs = values[0];
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parents: 2230
diff changeset
187 double [] ws = values[1];
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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parents: 328
diff changeset
188
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diff changeset
189 int N = Math.min(qs.length, ws.length);
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
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parents: 328
diff changeset
190
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diff changeset
191 if (N == 0) {
378
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
192 if (debug) {
2418
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parents: 2230
diff changeset
193 log.debug("Q(" + w + ") = []");
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parents: 2230
diff changeset
194 }
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parents: 2230
diff changeset
195 return new double [0];
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parents: 2230
diff changeset
196 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
197
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parents: 2230
diff changeset
198 TDoubleArrayList outQs = new TDoubleArrayList();
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diff changeset
199
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
200 if (epsEquals(ws[0], w)) {
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
201 outQs.add(qs[0]);
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
202 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
203
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
204 for (int i = 1; i < N; ++i) {
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
205 if (epsEquals(ws[i], w)) {
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
206 outQs.add(qs[i]);
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
207 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
208 else if (between(ws[i-1], ws[i], w)) {
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
209 double w1 = ws[i-1];
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
210 double w2 = ws[i];
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parents: 2230
diff changeset
211 double q1 = qs[i-1];
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
212 double q2 = qs[i];
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
213
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
214 // q1 = m*w1 + b
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parents: 2230
diff changeset
215 // q2 = m*w2 + b
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parents: 2230
diff changeset
216 // q2 - q1 = m*(w2 - w1)
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parents: 2230
diff changeset
217 // m = (q2 - q1)/(w2 - w1) # w2 != w1
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parents: 2230
diff changeset
218 // b = q1 - m*w1
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parents: 2230
diff changeset
219 // w1 != w2
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parents: 2230
diff changeset
220
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parents: 2230
diff changeset
221 double m = (q2 - q1)/(w2 - w1);
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
222 double b = q1 - m*w1;
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
223 double q = w*m + b;
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parents: 2230
diff changeset
224
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parents: 2230
diff changeset
225 outQs.add(q);
378
20c3a5b36434 Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 376
diff changeset
226 }
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 328
diff changeset
227 }
2418
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diff changeset
228
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parents: 2230
diff changeset
229 double [] result = outQs.toNativeArray();
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diff changeset
230
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parents: 2230
diff changeset
231 if (debug) {
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parents: 2230
diff changeset
232 log.debug("Q(" + w + ") = " + Arrays.toString(result));
378
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
233 }
2418
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diff changeset
234
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parents: 2230
diff changeset
235 return result;
329
0b2358bc716d Discharge table: Added static method getWForQ() to interpolate a w value for a given q value based on a given discharge table.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 328
diff changeset
236 }
4226
cb9f22c3553f DischargeTables: Added missing getWsForQ()
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4138
diff changeset
237
cb9f22c3553f DischargeTables: Added missing getWsForQ()
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4138
diff changeset
238 public static double [] getWsForQ(double [][] values, double q) {
cb9f22c3553f DischargeTables: Added missing getWsForQ()
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parents: 4138
diff changeset
239
cb9f22c3553f DischargeTables: Added missing getWsForQ()
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240 boolean debug = log.isDebugEnabled();
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241
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242 if (debug) {
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243 log.debug("getWsForQ: W = " + q);
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244 }
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245
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246 double [] qs = values[0];
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247 double [] ws = values[1];
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248
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249 int N = Math.min(qs.length, ws.length);
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250
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251 if (N == 0) {
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252 if (debug) {
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253 log.debug("W(" + q + ") = []");
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254 }
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255 return new double [0];
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256 }
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257
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258 TDoubleArrayList outWs = new TDoubleArrayList();
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259
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260 if (epsEquals(qs[0], q)) {
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261 outWs.add(ws[0]);
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262 }
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263
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264 for (int i = 1; i < N; ++i) {
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265 if (epsEquals(qs[i], q)) {
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266 outWs.add(ws[i]);
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267 }
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268 else if (between(qs[i-1], qs[i], q)) {
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269 double w1 = ws[i-1];
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270 double w2 = ws[i];
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271 double q1 = qs[i-1];
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272 double q2 = qs[i];
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273
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274 // w1 = m*q1 + b
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275 // w2 = m*q2 + b
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276 // w2 - w1 = m*(q2 - q1)
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277 // m = (w2 - w1)/(q2 - q1) # q2 != q1
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278 // b = w1 - m*q1
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279 // q1 != q2
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280
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281 double m = (w2 - w1)/(q2 - q1);
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282 double b = w1 - m*q1;
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283 double w = q*m + b;
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284
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285 outWs.add(w);
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286 }
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287 }
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288
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289 double [] result = outWs.toNativeArray();
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290
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291 if (debug) {
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292 log.debug("W(" + q + ") = " + Arrays.toString(result));
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293 }
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294
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295 return result;
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296 }
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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297 }
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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298 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org