Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WQ.java @ 744:b385577bcaca

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WQ: Added a method to guess is increasing. flys-artifacts/trunk@2246 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 27 Jun 2011 09:17:41 +0000
parents cbaa3ca86f2f
children 30be4b71c36c
rev   line source
726
cbaa3ca86f2f Added base class WQ for WQKms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.model;
cbaa3ca86f2f Added base class WQ for WQKms.
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2
cbaa3ca86f2f Added base class WQ for WQKms.
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3 import gnu.trove.TDoubleArrayList;
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4
744
b385577bcaca WQ: Added a method to guess is increasing.
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5 import java.util.Random;
b385577bcaca WQ: Added a method to guess is increasing.
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6
726
cbaa3ca86f2f Added base class WQ for WQKms.
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7 public class WQ
cbaa3ca86f2f Added base class WQ for WQKms.
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8 extends NamedObject
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9 {
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10 protected TDoubleArrayList w;
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11
cbaa3ca86f2f Added base class WQ for WQKms.
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12 protected TDoubleArrayList q;
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13
cbaa3ca86f2f Added base class WQ for WQKms.
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14 public WQ() {
cbaa3ca86f2f Added base class WQ for WQKms.
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15 this("");
cbaa3ca86f2f Added base class WQ for WQKms.
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16 }
cbaa3ca86f2f Added base class WQ for WQKms.
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17
cbaa3ca86f2f Added base class WQ for WQKms.
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18 public WQ(String name) {
cbaa3ca86f2f Added base class WQ for WQKms.
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19 w = new TDoubleArrayList();
cbaa3ca86f2f Added base class WQ for WQKms.
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20 q = new TDoubleArrayList();
cbaa3ca86f2f Added base class WQ for WQKms.
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21 }
cbaa3ca86f2f Added base class WQ for WQKms.
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22
cbaa3ca86f2f Added base class WQ for WQKms.
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23 public WQ(int capacity) {
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24 this(capacity, "");
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25 }
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26
cbaa3ca86f2f Added base class WQ for WQKms.
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27
cbaa3ca86f2f Added base class WQ for WQKms.
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28 public WQ(int capacity, String name) {
cbaa3ca86f2f Added base class WQ for WQKms.
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29 super(name);
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30 w = new TDoubleArrayList(capacity);
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31 q = new TDoubleArrayList(capacity);
cbaa3ca86f2f Added base class WQ for WQKms.
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32 }
cbaa3ca86f2f Added base class WQ for WQKms.
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33
cbaa3ca86f2f Added base class WQ for WQKms.
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34 public WQ(double [] qs, double [] ws) {
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35 this(qs, ws, "");
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36 }
cbaa3ca86f2f Added base class WQ for WQKms.
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37
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38 public WQ(double [] qs, double [] ws, String name) {
cbaa3ca86f2f Added base class WQ for WQKms.
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39 super(name);
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40 w = new TDoubleArrayList(ws);
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41 q = new TDoubleArrayList(qs);
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42 }
cbaa3ca86f2f Added base class WQ for WQKms.
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43
cbaa3ca86f2f Added base class WQ for WQKms.
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44 public void add(double w, double q) {
cbaa3ca86f2f Added base class WQ for WQKms.
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45 this.w.add(w);
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46 this.q.add(q);
cbaa3ca86f2f Added base class WQ for WQKms.
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47 }
cbaa3ca86f2f Added base class WQ for WQKms.
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48
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49 public int size() {
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50 return w.size();
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51 }
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52
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53 public double getW(int idx) {
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54 return w.getQuick(idx);
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55 }
cbaa3ca86f2f Added base class WQ for WQKms.
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56
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57 public double getQ(int idx) {
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58 return q.getQuick(idx);
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59 }
cbaa3ca86f2f Added base class WQ for WQKms.
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60
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61 public double [] get(int idx) {
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62 return get(idx, new double [2]);
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63 }
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64
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65 public double [] get(int idx, double [] dst) {
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66 dst[0] = w.getQuick(idx);
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67 dst[1] = q.getQuick(idx);
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68 return dst;
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69 }
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70
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71 public double [] getWs() {
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72 return w.toNativeArray();
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73 }
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74
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75 public double [] getQs() {
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76 return q.toNativeArray();
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77 }
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78
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79 public static void removeNaNs(TDoubleArrayList [] arrays) {
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80
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81 int dest = 0;
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82
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83 int A = arrays.length;
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84 int N = arrays[0].size();
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85
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86 OUTER: for (int i = 0; i < N; ++i) {
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87 for (int j = 0; j < A; ++j) {
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88 TDoubleArrayList a = arrays[j];
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89 double v = a.getQuick(i);
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90 if (Double.isNaN(v)) {
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91 continue OUTER;
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92 }
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93 a.setQuick(dest, v);
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94 }
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95 ++dest;
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96 }
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97
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98 if (dest < N) {
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99 for (int i = 0; i < A; ++i) {
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100 arrays[i].remove(dest, N-dest);
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101 }
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102 }
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103 }
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104
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105 public void removeNaNs() {
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106 removeNaNs(new TDoubleArrayList [] { w, q });
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107 }
744
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108
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109 public boolean guessWaterIncreasing() {
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110 return guessWaterIncreasing(0.05f);
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111 }
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112
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113 public boolean guessWaterIncreasing(float factor) {
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114
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115 int N = w.size();
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116 int samples = (int)(factor*N) + 1;
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117
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118 int up = 0;
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119
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120 Random rand = new Random();
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121
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122 for (int i = 0; i < samples; ++i) {
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123 int pos = rand.nextInt(N-1) + 1;
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124 double w1 = w.getQuick(pos-1);
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125 double w2 = w.getQuick(pos);
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126 if (w2 > w1) ++up;
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127 }
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128
b385577bcaca WQ: Added a method to guess is increasing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 726
diff changeset
129 return up > samples/2;
b385577bcaca WQ: Added a method to guess is increasing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 726
diff changeset
130 }
b385577bcaca WQ: Added a method to guess is increasing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 726
diff changeset
131
726
cbaa3ca86f2f Added base class WQ for WQKms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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132 }
cbaa3ca86f2f Added base class WQ for WQKms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org