Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/DischargeTables.java @ 5818:a4ff4167be1e

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Request feature info on all layers and show it as html if the server does not return valid gml. Non queryable layers produce an error message when the request fails. This is good enough
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 24 Apr 2013 17:33:27 +0200
parents 5f38d1c39ebd
children
rev   line source
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.util.List;
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4 import java.util.Map;
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5 import java.util.HashMap;
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6 import java.util.Arrays;
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7
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8 import java.io.Serializable;
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10 import org.hibernate.Session;
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11 import org.hibernate.Query;
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13 import org.apache.log4j.Logger;
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15 import de.intevation.flys.backend.SessionHolder;
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16 import de.intevation.flys.model.Gauge;
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17 import de.intevation.flys.model.DischargeTable;
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18 import de.intevation.flys.model.DischargeTableValue;
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20 import gnu.trove.TDoubleArrayList;
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22 /** Documentation goes here. */
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23 public class DischargeTables
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24 implements Serializable
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25 {
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26 /** Private logger. */
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27 private static Logger log = Logger.getLogger(DischargeTables.class);
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29 /** Scale to convert discharge table values of master table into [cm]. */
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30 public static final double MASTER_SCALE = 100d;
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32 /** Scale to convert discharge table values of historical tables into [cm]. */
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33 public static final double HISTORICAL_SCALE = 1d;
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35 public static final int MASTER = 0;
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37 protected List<String> gaugeNames;
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39 protected String riverName;
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41 protected double scale;
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42
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43 protected int kind;
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45 protected Map<String, double [][]> values;
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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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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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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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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 scale = Double.NaN;
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72 this.kind = kind;
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73 this.riverName = riverName;
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74 this.gaugeNames = gaugeNames;
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75 }
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76
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77 public double [][] getFirstTable() {
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78 return getFirstTable(MASTER_SCALE);
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79 }
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81 public double [][] getFirstTable(double scale) {
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82 Map<String, double [][]> values = getValues(scale);
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83 for (double [][] table: values.values()) {
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84 return table;
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85 }
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86 return null;
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87 }
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89 public Map<String, double [][]> getValues() {
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90 return getValues(MASTER_SCALE);
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91 }
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92
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93 public Map<String, double [][]> getValues(double scale) {
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94 if (values == null || scale != this.scale) {
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95 values = loadValues(scale);
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96 this.scale = scale;
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97 }
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98 return values;
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99 }
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100
1929
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101 /**
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102 * Returns mapping of gauge name to values.
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103 */
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104 protected Map<String, double [][]> loadValues(double scale) {
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105 Map<String, double [][]> values = new HashMap<String, double [][]>();
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106
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107 Session session = SessionHolder.HOLDER.get();
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108
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109 Query gaugeQuery = session.createQuery(
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110 "from Gauge where name=:gauge and river.name=:river");
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111 gaugeQuery.setParameter("river", riverName);
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113 for (String gaugeName: gaugeNames) {
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114 gaugeQuery.setParameter("gauge", gaugeName);
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parents: 154
diff changeset
115 List<Gauge> gauges = gaugeQuery.list();
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diff changeset
116 if (gauges.isEmpty()) {
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parents: 154
diff changeset
117 log.warn(
ea3a438a7021 Backend access: Static methods are using the SessionHolder, too.
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parents: 154
diff changeset
118 "no gauge '"+gaugeName+"' at river '"+riverName+"'");
ea3a438a7021 Backend access: Static methods are using the SessionHolder, too.
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parents: 154
diff changeset
119 continue;
ea3a438a7021 Backend access: Static methods are using the SessionHolder, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 154
diff changeset
120 }
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parents: 154
diff changeset
121 Gauge gauge = gauges.get(0);
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
diff changeset
122
311
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diff changeset
123 List<DischargeTable> tables = gauge.getDischargeTables();
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
diff changeset
124
311
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diff changeset
125 if (tables.isEmpty()) {
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diff changeset
126 log.warn(
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diff changeset
127 "no discharge table for gauge '" + gaugeName + "'");
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parents: 154
diff changeset
128 continue;
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
diff changeset
129 }
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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parents:
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130
311
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131 // TODO: Filter by time interval
4919
dbe9b7d6b80b Find correct discharge table for gauge.
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132 DischargeTable table = null;
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133 for (DischargeTable dt : tables) {
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parents: 4226
diff changeset
134 if (dt.getKind() == 0) {
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135 table = dt;
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diff changeset
136 break;
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
137 }
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
138 }
dbe9b7d6b80b Find correct discharge table for gauge.
Raimund Renkert <rrenkert@intevation.de>
parents: 4226
diff changeset
139 if (table == null) {
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
140 table = tables.get(0);
dbe9b7d6b80b Find correct discharge table for gauge.
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parents: 4226
diff changeset
141 }
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diff changeset
142 double [][] vs = loadDischargeTableValues(table, scale);
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
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143
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144 values.put(gaugeName, vs);
146
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parents:
diff changeset
145 }
311
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diff changeset
146
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diff changeset
147 return values;
146
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parents:
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148 }
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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diff changeset
149
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
150
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
151 /**
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
152 * @param table The discharge table
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
153 * @param scale The scale factor to adjust W and Q values.
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
154 *
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
155 * @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
156 */
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
157 public static double[][] loadDischargeTableValues(
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
158 DischargeTable table,
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diff changeset
159 double scale
2230
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 List<DischargeTableValue> dtvs = table.getDischargeTableValues();
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
162
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
163 final double [][] vs = new double[2][dtvs.size()];
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
164
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
165 int idx = 0;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
166 for (DischargeTableValue dtv: dtvs) {
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
167 double q = dtv.getQ().doubleValue();
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
168 vs[0][idx] = q * scale;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
169 vs[1][idx] = dtv.getW().doubleValue() * scale;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
170 ++idx;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
171 }
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
172
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
173 return vs;
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
174 }
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1929
diff changeset
175
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diff changeset
176 private static final double EPSILON = 1e-5;
2230
59af81364eb1 Improved the 'historical discharge' calculation: implemented findValueForW().
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parents: 1929
diff changeset
177
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diff changeset
178 private static final boolean epsEquals(double a, double b) {
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diff changeset
179 return Math.abs(a - b) < EPSILON;
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diff changeset
180 }
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parents: 2230
diff changeset
181
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diff changeset
182 private static final boolean between(double a, double b, double x) {
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diff changeset
183 if (a > b) { double t = a; a = b; b = t; }
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diff changeset
184 return x > a && x < b;
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diff changeset
185 }
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parents: 2230
diff changeset
186
5340
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
187 /**
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
188 * Find or interpolate Qs from q/w array.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
189 * @param values [[q0,q1,q2],[w0,w1,w2]]
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
190 * @param w W value to look for in values.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4919
diff changeset
191 */
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diff changeset
192 public static double [] getQsForW(double [][] values, double w) {
378
20c3a5b36434 Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 376
diff changeset
193
20c3a5b36434 Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 376
diff changeset
194 boolean debug = log.isDebugEnabled();
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
195
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
196 if (debug) {
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parents: 2230
diff changeset
197 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
198 }
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
199
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parents: 2230
diff changeset
200 double [] qs = values[0];
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parents: 2230
diff changeset
201 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
202
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parents: 2230
diff changeset
203 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
204
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parents: 2230
diff changeset
205 if (N == 0) {
378
20c3a5b36434 Repaired DischargeTables.getQForW()
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parents: 376
diff changeset
206 if (debug) {
2418
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parents: 2230
diff changeset
207 log.debug("Q(" + w + ") = []");
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parents: 2230
diff changeset
208 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
209 return new double [0];
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parents: 2230
diff changeset
210 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
211
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
212 TDoubleArrayList outQs = new TDoubleArrayList();
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 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
215 outQs.add(qs[0]);
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
216 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
217
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
218 for (int i = 1; i < N; ++i) {
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parents: 2230
diff changeset
219 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
220 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
221 }
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
222 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
223 double w1 = ws[i-1];
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parents: 2230
diff changeset
224 double w2 = ws[i];
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parents: 2230
diff changeset
225 double q1 = qs[i-1];
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parents: 2230
diff changeset
226 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
227
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
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parents: 2230
diff changeset
228 // q1 = m*w1 + b
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parents: 2230
diff changeset
229 // q2 = m*w2 + b
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parents: 2230
diff changeset
230 // q2 - q1 = m*(w2 - w1)
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parents: 2230
diff changeset
231 // m = (q2 - q1)/(w2 - w1) # w2 != w1
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parents: 2230
diff changeset
232 // b = q1 - m*w1
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parents: 2230
diff changeset
233 // w1 != w2
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parents: 2230
diff changeset
234
899ca89f497e Another partial fix for flys/issue499: Do the W to Q conversions
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2230
diff changeset
235 double m = (q2 - q1)/(w2 - w1);
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236 double b = q1 - m*w1;
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237 double q = w*m + b;
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238
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239 outQs.add(q);
378
20c3a5b36434 Repaired DischargeTables.getQForW()
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240 }
329
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241 }
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242
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243 double [] result = outQs.toNativeArray();
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244
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245 if (debug) {
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246 log.debug("Q(" + w + ") = " + Arrays.toString(result));
378
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247 }
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248
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249 return result;
329
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250 }
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251
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252 public static double [] getWsForQ(double [][] values, double q) {
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253
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254 boolean debug = log.isDebugEnabled();
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255
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256 if (debug) {
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257 log.debug("getWsForQ: W = " + q);
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258 }
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259
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260 double [] qs = values[0];
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261 double [] ws = values[1];
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262
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263 int N = Math.min(qs.length, ws.length);
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264
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265 if (N == 0) {
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266 if (debug) {
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267 log.debug("W(" + q + ") = []");
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268 }
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269 return new double [0];
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270 }
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271
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272 TDoubleArrayList outWs = new TDoubleArrayList();
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273
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274 if (epsEquals(qs[0], q)) {
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275 outWs.add(ws[0]);
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276 }
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277
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278 for (int i = 1; i < N; ++i) {
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279 if (epsEquals(qs[i], q)) {
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280 outWs.add(ws[i]);
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281 }
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282 else if (between(qs[i-1], qs[i], q)) {
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283 double w1 = ws[i-1];
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284 double w2 = ws[i];
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285 double q1 = qs[i-1];
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286 double q2 = qs[i];
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287
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288 // w1 = m*q1 + b
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289 // w2 = m*q2 + b
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290 // w2 - w1 = m*(q2 - q1)
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291 // m = (w2 - w1)/(q2 - q1) # q2 != q1
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292 // b = w1 - m*q1
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293 // q1 != q2
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294
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295 double m = (w2 - w1)/(q2 - q1);
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296 double b = w1 - m*q1;
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297 double w = q*m + b;
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298
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299 outWs.add(w);
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300 }
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301 }
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302
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303 double [] result = outWs.toNativeArray();
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304
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305 if (debug) {
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306 log.debug("W(" + q + ") = " + Arrays.toString(result));
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307 }
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308
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309 return result;
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310 }
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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311 }
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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312 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org