Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/fitting/App.java @ 4655:cd44d28d0fbc
Move the access to artifact data to the Access object
Use BedHeightAccess class to receive the data from the artifact. This abstracts
the data access from the actual artifact.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Tue, 11 Dec 2012 09:44:04 +0100 |
parents | 5642a83420f2 |
children |
rev | line source |
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2569
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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1 package de.intevation.flys.artifacts.math.fitting; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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2 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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3 import java.util.List; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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4 import java.util.Map; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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5 import java.util.ArrayList; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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6 import java.util.TreeMap; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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7 import java.util.Comparator; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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8 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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9 import java.io.IOException; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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10 import java.io.BufferedReader; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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11 import java.io.Reader; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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12 import java.io.InputStreamReader; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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13 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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14 import org.apache.commons.math.optimization.fitting.CurveFitter; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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15 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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16 import org.apache.commons.math.optimization.general.LevenbergMarquardtOptimizer; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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17 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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18 import org.apache.commons.math.MathException; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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19 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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20 public class App |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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21 { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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22 public static final double EPS = 1e-5; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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23 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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24 public static final String FUNCTION_NAME = |
0dd58ab7e118
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25 System.getProperty("function", "linear"); |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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26 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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27 public static final Comparator<Double> EPS_CMP = |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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28 new Comparator<Double>() { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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29 @Override |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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30 public int compare(Double a, Double b) { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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31 double diff = a - b; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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32 if (diff < -EPS) return -1; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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33 if (diff > EPS) return +1; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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34 return 0; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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35 } |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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36 }; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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37 |
3076
5642a83420f2
FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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38 public static final List<Double []>readPoints(Reader reader) |
2569
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39 throws IOException |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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parents:
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40 { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
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41 Map<Double, Double> map = new TreeMap<Double, Double>(EPS_CMP); |
0dd58ab7e118
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parents:
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42 |
0dd58ab7e118
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parents:
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43 BufferedReader input = new BufferedReader(reader); |
0dd58ab7e118
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parents:
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44 |
0dd58ab7e118
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45 String line; |
0dd58ab7e118
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46 while ((line = input.readLine()) != null) { |
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47 if ((line = line.trim()).length() == 0 || line.startsWith("#")) { |
0dd58ab7e118
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48 continue; |
0dd58ab7e118
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49 } |
0dd58ab7e118
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parents:
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50 |
0dd58ab7e118
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51 String [] parts = line.split("\\s+"); |
0dd58ab7e118
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52 |
0dd58ab7e118
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53 if (parts.length < 2) { |
0dd58ab7e118
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54 continue; |
0dd58ab7e118
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55 } |
0dd58ab7e118
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56 |
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57 try { |
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58 Double x = Double.valueOf(parts[0]); |
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59 Double y = Double.valueOf(parts[1]); |
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60 |
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61 Double old = map.put(x, y); |
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62 |
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63 if (old != null) { |
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64 System.err.println("duplicate x: " + x); |
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65 } |
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66 } |
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67 catch (NumberFormatException nfe) { |
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68 nfe.printStackTrace(); |
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69 } |
0dd58ab7e118
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70 } |
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71 |
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72 List<Double []> list = new ArrayList<Double []>(map.size()); |
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73 |
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74 for (Map.Entry<Double, Double> entry: map.entrySet()) { |
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75 list.add(new Double [] { entry.getKey(), entry.getValue() }); |
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76 } |
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77 |
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78 return list; |
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79 } |
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80 |
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81 public static void main(String [] args) { |
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82 |
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83 Function function = FunctionFactory |
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84 .getInstance() |
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85 .getFunction(FUNCTION_NAME); |
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86 |
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87 if (function == null) { |
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88 System.err.println("Cannot find function '" + FUNCTION_NAME + "'."); |
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89 System.exit(1); |
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90 } |
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91 |
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92 List<Double []> points = null; |
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93 |
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94 try { |
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95 points = readPoints(new InputStreamReader(System.in)); |
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96 } |
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97 catch (IOException ioe) { |
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98 ioe.printStackTrace(); |
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99 System.exit(1); |
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100 } |
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101 |
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102 LevenbergMarquardtOptimizer lmo = new LevenbergMarquardtOptimizer(); |
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103 |
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104 CurveFitter cf = new CurveFitter(lmo); |
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105 |
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106 for (Double [] point: points) { |
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107 cf.addObservedPoint(point[0], point[1]); |
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108 } |
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109 |
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110 double [] parameters = null; |
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111 |
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112 try { |
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113 parameters = cf.fit(function, function.getInitialGuess()); |
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114 } |
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115 catch (MathException me) { |
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116 me.printStackTrace(); |
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117 System.exit(1); |
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118 } |
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119 |
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120 String [] parameterNames = function.getParameterNames(); |
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121 |
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122 for (int i = 0; i < parameterNames.length; ++i) { |
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123 System.err.println(parameterNames[i] + ": " + parameters[i]); |
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124 } |
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125 } |
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126 } |
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127 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |