Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/DischargeTables.java @ 2149:b5f3b29544ea
Added cache definition for hyks.
flys-artifacts/trunk@3731 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 20 Jan 2012 08:30:50 +0000 |
parents | 6b0ae0f2cae6 |
children | 59af81364eb1 |
rev | line source |
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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 import java.util.Comparator; |
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8 |
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9 import java.io.Serializable; |
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10 |
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11 import org.hibernate.Session; |
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12 import org.hibernate.Query; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 |
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16 import de.intevation.flys.backend.SessionHolder; |
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17 import de.intevation.flys.model.Gauge; |
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18 import de.intevation.flys.model.DischargeTable; |
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19 import de.intevation.flys.model.DischargeTableValue; |
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20 |
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21 public class DischargeTables |
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22 implements Serializable |
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23 { |
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24 private static Logger log = Logger.getLogger(DischargeTables.class); |
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25 |
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26 public static final double DEFAULT_SCALE = 100.0; |
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27 |
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28 public static final int MASTER = 0; |
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29 |
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30 protected List<String> gaugeNames; |
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31 |
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32 protected String riverName; |
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33 |
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34 protected double scale; |
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35 |
328
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36 protected int kind; |
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37 |
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38 protected Map<String, double [][]> values; |
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39 |
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40 public DischargeTables() { |
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41 } |
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42 |
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43 public DischargeTables(String riverName, String gaugeName) { |
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44 this(riverName, gaugeName, MASTER); |
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45 } |
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46 |
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47 public DischargeTables(String riverName, String gaugeName, int kind) { |
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48 this(riverName, new String [] { gaugeName }, kind); |
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49 } |
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50 |
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51 public DischargeTables(String riverName, String [] gaugeNames) { |
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52 this(riverName, gaugeNames, MASTER); |
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53 } |
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54 |
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55 public DischargeTables(String riverName, String [] gaugeNames, int kind) { |
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56 this(riverName, Arrays.asList(gaugeNames), kind); |
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57 } |
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58 |
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59 public DischargeTables( |
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60 String riverName, |
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61 List<String> gaugeNames, |
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62 int kind |
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63 ) { |
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64 scale = Double.NaN; |
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65 this.kind = kind; |
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66 this.riverName = riverName; |
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67 this.gaugeNames = gaugeNames; |
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68 } |
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69 |
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70 public double [][] getFirstTable() { |
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71 return getFirstTable(DEFAULT_SCALE); |
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72 } |
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73 |
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74 public double [][] getFirstTable(double scale) { |
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75 Map<String, double [][]> values = getValues(scale); |
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76 for (double [][] table: values.values()) { |
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77 return table; |
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78 } |
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79 return null; |
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80 } |
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81 |
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82 public Map<String, double [][]> getValues() { |
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83 return getValues(DEFAULT_SCALE); |
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84 } |
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85 |
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86 public Map<String, double [][]> getValues(double scale) { |
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87 if (values == null || scale != this.scale) { |
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88 values = loadValues(scale); |
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89 this.scale = scale; |
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90 } |
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91 return values; |
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92 } |
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93 |
1929
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94 /** |
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95 * Returns mapping of gauge name to values. |
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96 */ |
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97 protected Map<String, double [][]> loadValues(double scale) { |
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98 Map<String, double [][]> values = new HashMap<String, double [][]>(); |
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99 |
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100 Session session = SessionHolder.HOLDER.get(); |
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101 |
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102 Query gaugeQuery = session.createQuery( |
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103 "from Gauge where name=:gauge and river.name=:river"); |
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104 gaugeQuery.setParameter("river", riverName); |
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105 |
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106 for (String gaugeName: gaugeNames) { |
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107 gaugeQuery.setParameter("gauge", gaugeName); |
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108 List<Gauge> gauges = gaugeQuery.list(); |
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109 if (gauges.isEmpty()) { |
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110 log.warn( |
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111 "no gauge '"+gaugeName+"' at river '"+riverName+"'"); |
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112 continue; |
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113 } |
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114 Gauge gauge = gauges.get(0); |
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115 |
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116 List<DischargeTable> tables = gauge.getDischargeTables(); |
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117 |
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118 if (tables.isEmpty()) { |
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119 log.warn( |
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120 "no discharge table for gauge '" + gaugeName + "'"); |
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121 continue; |
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122 } |
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123 |
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124 // TODO: Filter by time interval |
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125 DischargeTable table = tables.get(0); |
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126 |
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127 List<DischargeTableValue> dtvs = |
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128 table.getDischargeTableValues(); |
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129 |
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130 final double [][] vs = new double[2][dtvs.size()]; |
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131 |
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132 boolean qSorted = true; |
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133 |
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134 double lastQ = -Double.MAX_VALUE; |
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135 |
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136 int idx = 0; |
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137 for (DischargeTableValue dtv: dtvs) { |
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138 double q = dtv.getQ().doubleValue(); |
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139 vs[0][idx] = q * scale; |
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140 vs[1][idx] = dtv.getW().doubleValue() * scale; |
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141 ++idx; |
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142 |
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143 if (qSorted && lastQ > q) { |
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144 qSorted = false; |
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145 } |
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146 lastQ = q; |
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147 } |
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148 |
333
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149 if (!qSorted) { |
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150 log.debug("need to sort by q values"); |
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151 // TODO: Do this db level. |
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152 // XXX: This is so ugly :-( |
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153 Integer [] indices = new Integer[vs[0].length]; |
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154 for (int i = 0; i < indices.length; ++i) { |
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155 indices[i] = i; |
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156 } |
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157 |
333
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158 Arrays.sort(indices, new Comparator<Integer>() { |
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159 public int compare(Integer a, Integer b) { |
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160 double va = vs[1][a]; |
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161 double vb = vs[1][b]; |
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162 double d = va - vb; |
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163 if (d < 0.0) return -1; |
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164 if (d > 0.0) return +1; |
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165 return 0; |
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166 } |
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167 }); |
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168 |
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169 double [][] vs2 = new double[2][vs[0].length]; |
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170 for (int i = 0; i < indices.length; ++i) { |
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171 vs2[0][i] = vs[0][indices[i]]; |
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172 vs2[1][i] = vs[1][indices[i]]; |
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173 } |
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174 values.put(gaugeName, vs2); |
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175 } |
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176 else { |
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177 values.put(gaugeName, vs); |
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178 } |
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179 |
146
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180 } |
311
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181 |
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182 return values; |
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183 } |
329
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184 |
376
aa0889141b15
Removed an unused parameter from DischargeTables.getQForW().
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|
185 public static double getQForW(double [][] values, double w) { |
378
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186 |
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|
187 boolean debug = log.isDebugEnabled(); |
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188 |
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|
189 if (debug) { |
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|
190 log.debug("calculating getQForW(" + w + ")"); |
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191 } |
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192 |
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db68806e6563
Fixed "W am Pegel" calculations.
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|
193 int index = Arrays.binarySearch(values[1], w); |
329
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194 if (index >= 0) { |
334
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195 return values[0][index]; |
329
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196 } |
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197 |
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198 index = -index - 1; // insert position |
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199 |
378
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|
200 if (index < 1 || index >= values[0].length) { |
329
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201 // do not extraploate |
378
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|
202 if (debug) { |
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|
203 log.debug("we do not extrapolate: NaN"); |
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204 } |
334
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|
205 return Double.NaN; |
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
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206 } |
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
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207 |
735
db68806e6563
Fixed "W am Pegel" calculations.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
378
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208 double w1 = values[1][index-1]; |
db68806e6563
Fixed "W am Pegel" calculations.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
378
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209 double w2 = values[1][index ]; |
db68806e6563
Fixed "W am Pegel" calculations.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
378
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210 double q1 = values[0][index-1]; |
db68806e6563
Fixed "W am Pegel" calculations.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
378
diff
changeset
|
211 double q2 = values[0][index ]; |
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
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changeset
|
212 |
334
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
diff
changeset
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213 // q1 = m*w1 + b |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
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changeset
|
214 // q2 = m*w2 + b |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
diff
changeset
|
215 // q2 - q1 = m*(w2 - w1) |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
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changeset
|
216 // m = (q2 - q1)/(w2 - w1) # w2 != w1 |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
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changeset
|
217 // b = q1 - m*w1 |
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
|
218 |
378
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
219 double q; |
334
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
333
diff
changeset
|
220 if (w1 == w2) { |
378
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
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221 q = 0.5*(q1 + q2); |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
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changeset
|
222 if (debug) { |
1929
6b0ae0f2cae6
(Minor) cosmetics, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
735
diff
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223 log.debug("same w1 and w2: " + w1); |
378
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
224 } |
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
|
225 } |
378
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
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changeset
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226 else { |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
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227 double m = (q2 - q1)/(w2 - w1); |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
228 double b = q1 - m*w1; |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
229 q = w*m + b; |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
230 } |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
231 if (debug) { |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
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changeset
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232 log.debug("Q(" + w + ") = " + q); |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
diff
changeset
|
233 } |
20c3a5b36434
Repaired DischargeTables.getQForW()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
376
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changeset
|
234 return q; |
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
|
235 } |
146
e8dfe6ba2000
Fetch w/q values of discharge tables for given gauges.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
236 } |
e8dfe6ba2000
Fetch w/q values of discharge tables for given gauges.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
237 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |