Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/DischargeTables.java @ 1890:9144e5a5027b
(Picky) cosmetics.
flys-artifacts/trunk@3250 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Tue, 15 Nov 2011 14:15:31 +0000 |
parents | db68806e6563 |
children | 6b0ae0f2cae6 |
rev | line source |
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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 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 |
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94 protected Map<String, double [][]> loadValues(double scale) { |
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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; |
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119 } |
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120 |
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121 // TODO: Filter by time interval |
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122 DischargeTable table = tables.get(0); |
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123 |
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124 List<DischargeTableValue> dtvs = |
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125 table.getDischargeTableValues(); |
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126 |
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127 final double [][] vs = new double[2][dtvs.size()]; |
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128 |
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129 boolean qSorted = true; |
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130 |
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131 double lastQ = -Double.MAX_VALUE; |
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132 |
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133 int idx = 0; |
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134 for (DischargeTableValue dtv: dtvs) { |
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135 double q = dtv.getQ().doubleValue(); |
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136 vs[0][idx] = q * scale; |
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137 vs[1][idx] = dtv.getW().doubleValue() * scale; |
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138 ++idx; |
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139 |
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140 if (qSorted && lastQ > q) { |
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141 qSorted = false; |
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142 } |
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143 lastQ = q; |
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144 } |
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145 |
333
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146 if (!qSorted) { |
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147 log.debug("need to sort by q values"); |
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148 // TODO: Do this db level. |
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149 // XXX: This is so ugly :-( |
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150 Integer [] indices = new Integer[vs[0].length]; |
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151 for (int i = 0; i < indices.length; ++i) { |
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152 indices[i] = i; |
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153 } |
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154 |
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155 Arrays.sort(indices, new Comparator<Integer>() { |
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156 public int compare(Integer a, Integer b) { |
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157 double va = vs[1][a]; |
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158 double vb = vs[1][b]; |
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159 double d = va - vb; |
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160 if (d < 0.0) return -1; |
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161 if (d > 0.0) return +1; |
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162 return 0; |
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163 } |
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164 }); |
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165 |
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166 double [][] vs2 = new double[2][vs[0].length]; |
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167 for (int i = 0; i < indices.length; ++i) { |
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168 vs2[0][i] = vs[0][indices[i]]; |
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169 vs2[1][i] = vs[1][indices[i]]; |
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170 } |
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171 values.put(gaugeName, vs2); |
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172 } |
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173 else { |
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174 values.put(gaugeName, vs); |
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175 } |
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176 |
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177 } |
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178 |
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179 return values; |
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180 } |
329
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181 |
376
aa0889141b15
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182 public static double getQForW(double [][] values, double w) { |
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183 |
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184 boolean debug = log.isDebugEnabled(); |
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185 |
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186 if (debug) { |
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187 log.debug("calculating getQForW(" + w + ")"); |
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188 } |
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189 |
735
db68806e6563
Fixed "W am Pegel" calculations.
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190 int index = Arrays.binarySearch(values[1], w); |
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191 if (index >= 0) { |
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192 return values[0][index]; |
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193 } |
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194 |
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195 index = -index - 1; // insert position |
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196 |
378
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197 if (index < 1 || index >= values[0].length) { |
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198 // do not extraploate |
378
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199 if (debug) { |
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200 log.debug("we do not extrapolate: NaN"); |
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201 } |
334
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202 return Double.NaN; |
329
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203 } |
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204 |
735
db68806e6563
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205 double w1 = values[1][index-1]; |
db68806e6563
Fixed "W am Pegel" calculations.
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206 double w2 = values[1][index ]; |
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Fixed "W am Pegel" calculations.
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207 double q1 = values[0][index-1]; |
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Fixed "W am Pegel" calculations.
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208 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.
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209 |
334
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
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210 // q1 = m*w1 + b |
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Discharge table: we need a getQForW() and not a getWForQ().
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parents:
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211 // q2 = m*w2 + b |
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Discharge table: we need a getQForW() and not a getWForQ().
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parents:
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212 // q2 - q1 = m*(w2 - w1) |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
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parents:
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213 // m = (q2 - q1)/(w2 - w1) # w2 != w1 |
b7c8df643dc4
Discharge table: we need a getQForW() and not a getWForQ().
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parents:
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214 // 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.
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parents:
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215 |
378
20c3a5b36434
Repaired DischargeTables.getQForW()
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parents:
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216 double q; |
334
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Discharge table: we need a getQForW() and not a getWForQ().
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parents:
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217 if (w1 == w2) { |
378
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Repaired DischargeTables.getQForW()
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218 q = 0.5*(q1 + q2); |
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Repaired DischargeTables.getQForW()
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219 if (debug) { |
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Repaired DischargeTables.getQForW()
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220 log.debug("same w1 and w1: " + w1); |
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Repaired DischargeTables.getQForW()
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221 } |
329
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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:
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222 } |
378
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223 else { |
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Repaired DischargeTables.getQForW()
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224 double m = (q2 - q1)/(w2 - w1); |
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Repaired DischargeTables.getQForW()
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parents:
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225 double b = q1 - m*w1; |
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Repaired DischargeTables.getQForW()
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226 q = w*m + b; |
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Repaired DischargeTables.getQForW()
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parents:
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227 } |
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Repaired DischargeTables.getQForW()
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228 if (debug) { |
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Repaired DischargeTables.getQForW()
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229 log.debug("Q(" + w + ") = " + q); |
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Repaired DischargeTables.getQForW()
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parents:
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230 } |
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Repaired DischargeTables.getQForW()
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231 return q; |
329
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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:
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232 } |
146
e8dfe6ba2000
Fetch w/q values of discharge tables for given gauges.
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parents:
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233 } |
e8dfe6ba2000
Fetch w/q values of discharge tables for given gauges.
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parents:
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234 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |