Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WQ.java @ 744:b385577bcaca
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 |
comparison
equal
deleted
inserted
replaced
| 743:e95e6df97e55 | 744:b385577bcaca |
|---|---|
| 1 package de.intevation.flys.artifacts.model; | 1 package de.intevation.flys.artifacts.model; |
| 2 | 2 |
| 3 import gnu.trove.TDoubleArrayList; | 3 import gnu.trove.TDoubleArrayList; |
| 4 | |
| 5 import java.util.Random; | |
| 4 | 6 |
| 5 public class WQ | 7 public class WQ |
| 6 extends NamedObject | 8 extends NamedObject |
| 7 { | 9 { |
| 8 protected TDoubleArrayList w; | 10 protected TDoubleArrayList w; |
| 101 } | 103 } |
| 102 | 104 |
| 103 public void removeNaNs() { | 105 public void removeNaNs() { |
| 104 removeNaNs(new TDoubleArrayList [] { w, q }); | 106 removeNaNs(new TDoubleArrayList [] { w, q }); |
| 105 } | 107 } |
| 108 | |
| 109 public boolean guessWaterIncreasing() { | |
| 110 return guessWaterIncreasing(0.05f); | |
| 111 } | |
| 112 | |
| 113 public boolean guessWaterIncreasing(float factor) { | |
| 114 | |
| 115 int N = w.size(); | |
| 116 int samples = (int)(factor*N) + 1; | |
| 117 | |
| 118 int up = 0; | |
| 119 | |
| 120 Random rand = new Random(); | |
| 121 | |
| 122 for (int i = 0; i < samples; ++i) { | |
| 123 int pos = rand.nextInt(N-1) + 1; | |
| 124 double w1 = w.getQuick(pos-1); | |
| 125 double w2 = w.getQuick(pos); | |
| 126 if (w2 > w1) ++up; | |
| 127 } | |
| 128 | |
| 129 return up > samples/2; | |
| 130 } | |
| 131 | |
| 106 } | 132 } |
| 107 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 133 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |