Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/DataUtil.java @ 4241:49cb65d5932d

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Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents 5642a83420f2
children
rev   line source
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.utils;
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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2
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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3 import java.util.Random;
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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4
1678
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
diff changeset
5 import gnu.trove.TDoubleArrayList;
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2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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6
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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7 public class DataUtil
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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8 {
1678
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
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9 public static boolean guessWaterIncreasing(TDoubleArrayList data) {
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
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10 return guessWaterIncreasing(data, 0.05f);
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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11 }
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
12
1678
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
diff changeset
13 public static boolean guessWaterIncreasing(TDoubleArrayList data, float factor) {
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
diff changeset
14 int N = data.size();
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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15 if (N < 2) return false;
3076
5642a83420f2 FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1982
diff changeset
16
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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17 int samples = (int)(factor*N) + 1;
3076
5642a83420f2 FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1982
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18
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2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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19 int up = 0;
3076
5642a83420f2 FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1982
diff changeset
20
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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21 Random rand = new Random();
3076
5642a83420f2 FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1982
diff changeset
22
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
23 for (int i = 0; i < samples; ++i) {
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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24 int pos2 = rand.nextInt(N-1) + 1;
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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25 int pos1 = rand.nextInt(pos2);
1678
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
diff changeset
26 double w1 = data.getQuick(pos1);
03fbf1b30e72 Removed code duplication of guessWaterIncreasing()
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1163
diff changeset
27 double w2 = data.getQuick(pos2);
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
28 if (w2 > w1) ++up;
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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29 }
3076
5642a83420f2 FLYS artifacts: Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1982
diff changeset
30
1163
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff changeset
31 return up > samples/2;
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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32 }
2e0739853807 Fix build, added new DataUtil.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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33 }
1982
8afd6a9bb244 Cosmetics.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1678
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34 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org