Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/W.java @ 2230:59af81364eb1

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Improved the 'historical discharge' calculation: implemented findValueForW(). flys-artifacts/trunk@3872 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 01 Feb 2012 15:41:11 +0000
parents 53d954973610
children bcf25d8c183e
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 de.intevation.flys.utils.DataUtil;
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4
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5 import gnu.trove.TDoubleArrayList;
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6
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7 import org.apache.log4j.Logger;
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8
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9 public class W
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10 extends NamedObjectImpl
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11 {
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12 private static Logger log = Logger.getLogger(W.class);
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13
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14 protected TDoubleArrayList ws;
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15
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16 public W() {
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17 ws = new TDoubleArrayList();
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18 }
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19
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20 public W(String name) {
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21 super(name);
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22 ws = new TDoubleArrayList();
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23 }
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24
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25 public W(int capacity) {
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26 this(capacity, "");
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27 }
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28
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29 public W(int capacity, String name) {
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30 super(name);
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31 ws = new TDoubleArrayList(capacity);
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32 }
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33
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34 public void add(double value) {
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35 ws.add(value);
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36 }
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37
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38 public int size() {
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39 return ws.size();
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40 }
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41
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42 public double getW(int idx) {
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43 return ws.getQuick(idx);
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44 }
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45
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46 public double [] getWs() {
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47 return ws.toNativeArray();
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48 }
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49
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50 public double [] get(int idx) {
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51 return get(idx, new double [1]);
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52 }
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53
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54 public double [] get(int idx, double [] dst) {
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55 dst[0] = ws.getQuick(idx);
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56 return dst;
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57 }
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58
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59 public double minWs() {
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60 return ws.min();
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61 }
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62
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63 public static void removeNaNs(TDoubleArrayList [] arrays) {
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64
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65 int dest = 0;
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66
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67 int A = arrays.length;
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68 int N = arrays[0].size();
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69
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70 OUTER: for (int i = 0; i < N; ++i) {
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71 for (int j = 0; j < A; ++j) {
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72 TDoubleArrayList a = arrays[j];
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73 double v = a.getQuick(i);
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74 if (Double.isNaN(v)) {
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75 continue OUTER;
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76 }
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77 a.setQuick(dest, v);
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78 }
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79 ++dest;
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80 }
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81
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82 if (dest < N) {
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83 for (int i = 0; i < A; ++i) {
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84 arrays[i].remove(dest, N-dest);
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85 }
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86 }
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87 }
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88
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89 public void removeNaNs() {
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90 removeNaNs(new TDoubleArrayList [] { ws });
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91 }
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92
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93 public boolean guessWaterIncreasing() {
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94 return guessWaterIncreasing(0.05f);
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95 }
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96
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97 public boolean guessWaterIncreasing(float factor) {
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98 return DataUtil.guessWaterIncreasing(ws, factor);
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99 }
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100
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101 public int [] longestIncreasingWRangeIndices() {
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102 return longestIncreasingWRangeIndices(new int[2]);
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103 }
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104
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105 public int [] longestIncreasingWRangeIndices(int [] bounds) {
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106
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107 int N = size();
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108 int start = 0;
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109 int stop = 0;
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110
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111 double lastW = Double.MAX_VALUE;
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112
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113 for (int i = 0; i < N; ++i) {
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114 double v = ws.getQuick(i);
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115 if (v <= lastW) {
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116 if (stop-start > bounds[1]-bounds[0]) {
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117 bounds[0] = start;
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118 bounds[1] = stop;
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119 if (log.isDebugEnabled()) {
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120 log.debug("new range: " +
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121 bounds[0] + " - " + bounds[1] + " (" +
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122 ws.getQuick(bounds[0]) + ", " +
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123 ws.getQuick(bounds[1]) + ")");
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124
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125 }
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126 }
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127 start = stop = i;
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128 }
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129 else {
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130 stop = i;
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131 }
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132 lastW = v;
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133 }
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134
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135 if (stop-start > bounds[1]-bounds[0]) {
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136 bounds[0] = start;
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137 bounds[1] = stop;
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138 if (log.isDebugEnabled()) {
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139 log.debug("new range @end: " +
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140 bounds[0] + " - " + bounds[1] + " (" +
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141 ws.getQuick(bounds[0]) + ", " +
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142 ws.getQuick(bounds[1]) + ")");
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143 }
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144 }
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145
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146 return bounds;
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147 }
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148 }
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149 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org