Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/SQRelationCalculation.java @ 3426:e7a67407dea1
Limited the input of time periods in SQ relation calculation to 1.
flys-artifacts/trunk@5082 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 20 Jul 2012 09:34:47 +0000 |
parents | 56f62b5209f5 |
children | 1df6984628c3 |
rev | line source |
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1 package de.intevation.flys.artifacts.model.sq; |
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2 |
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3 import de.intevation.flys.artifacts.access.SQRelationAccess; |
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5 import de.intevation.flys.artifacts.math.fitting.Function; |
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6 import de.intevation.flys.artifacts.math.fitting.FunctionFactory; |
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7 |
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8 import de.intevation.flys.artifacts.model.Calculation; |
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9 import de.intevation.flys.artifacts.model.CalculationResult; |
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10 import de.intevation.flys.artifacts.model.DateRange; |
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11 import de.intevation.flys.artifacts.model.Parameters; |
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12 |
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13 import de.intevation.flys.backend.SedDBSessionHolder; |
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14 |
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15 import java.util.List; |
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16 |
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17 import org.apache.log4j.Logger; |
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18 |
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19 public class SQRelationCalculation extends Calculation { |
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20 |
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21 private static final Logger log = |
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22 Logger.getLogger(SQRelationCalculation.class); |
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23 |
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24 public static final String SQ_FUNCTION_NAME = "sq-pow"; |
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25 |
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26 protected String river; |
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27 protected double location; |
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28 protected DateRange period; |
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29 protected double outliers; |
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30 |
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31 public SQRelationCalculation() { |
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32 } |
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33 |
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34 public SQRelationCalculation(SQRelationAccess access) { |
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35 |
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36 String river = access.getRiver(); |
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37 Double location = access.getLocation(); |
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38 DateRange period = access.getPeriod(); |
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39 Double outliers = access.getOutliers(); |
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40 |
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41 //river = "Rhein"; |
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42 |
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43 if (river == null) { |
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44 // TODO: i18n |
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45 addProblem("sq.missing.river"); |
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46 } |
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47 |
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48 if (location == null) { |
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49 // TODO: i18n |
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50 addProblem("sq.missing.location"); |
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51 } |
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52 |
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53 if (period == null) { |
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54 // TODO: i18n |
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55 addProblem("sq.missing.periods"); |
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56 } |
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57 |
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58 if (outliers == null) { |
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59 // TODO: i18n |
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60 addProblem("sq.missing.outliers"); |
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61 } |
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62 |
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63 if (!hasProblems()) { |
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64 this.river = river; |
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65 this.location = location; |
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66 this.period = period; |
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67 this.outliers = outliers; |
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68 } |
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69 } |
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70 |
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71 |
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72 public CalculationResult calculate() { |
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73 log.debug("SQRelationCalculation.calculate"); |
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74 |
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75 if (hasProblems()) { |
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76 return new CalculationResult(this); |
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77 } |
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78 |
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79 SedDBSessionHolder.acquire(); |
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80 try { |
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81 return internalCalculate(); |
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82 } |
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83 finally { |
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84 SedDBSessionHolder.release(); |
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85 } |
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86 } |
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87 |
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88 protected CalculationResult internalCalculate() { |
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89 |
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90 boolean debug = log.isDebugEnabled(); |
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91 |
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92 Function function = FunctionFactory |
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93 .getInstance() |
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94 .getFunction(SQ_FUNCTION_NAME); |
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95 |
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96 if (function == null) { |
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97 log.error("No '" + SQ_FUNCTION_NAME + "' function found."); |
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98 // TODO: i18n |
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99 addProblem("sq.missing.sq.function"); |
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100 } |
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101 |
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102 |
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103 String [] parameterNames = function.getParameterNames(); |
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104 |
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105 Fitting fitting = new Fitting(function, outliers); |
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106 |
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107 Measurements measurements = |
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108 MeasurementFactory.getMeasurements(river, location, period); |
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109 |
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110 SQFractionResult [] fractionResults = |
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111 new SQFractionResult[SQResult.NUMBER_FRACTIONS]; |
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112 |
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113 for (int i = 0; i < fractionResults.length; ++i) { |
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114 List<SQ> sqs = measurements.getSQs(i); |
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115 |
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116 SQFractionResult fractionResult; |
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117 |
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118 if (!fitting.fit(sqs)) { |
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119 // TODO: i18n |
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120 addProblem("sq.fitting.failed." + i); |
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121 fractionResult = new SQFractionResult(); |
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122 } |
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123 else { |
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124 Parameters parameters = createParameters(parameterNames); |
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125 int row = parameters.newRow(); |
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126 double [] coeffs = fitting.getParameters(); |
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127 for (int j = 0; j < parameterNames.length; ++j) { |
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128 parameters.set(row, parameterNames[j], coeffs[j]); |
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129 } |
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130 parameters.set(row, "chi_sqr", fitting.getChiSqr()); |
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131 parameters.set(row, "std_dev", fitting.getStandardDeviation()); |
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132 |
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133 fractionResult = new SQFractionResult( |
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134 parameters, |
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135 fitting.getRemaining(), |
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136 fitting.getOutliers()); |
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137 } |
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138 fitting.reset(); |
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139 fractionResults[i] = fractionResult; |
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140 } |
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141 |
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142 return new CalculationResult( |
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143 new SQResult[] { new SQResult(location, fractionResults) }, |
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144 this); |
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145 } |
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146 |
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147 public static final Parameters createParameters(String [] names) { |
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148 |
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149 String [] columns = new String[names.length + 2]; |
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150 columns[0] = "chi_sqr"; |
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151 columns[1] = "std_dev"; |
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152 System.arraycopy(names, 0, columns, 2, names.length); |
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153 return new Parameters(columns); |
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154 } |
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155 } |
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156 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |