Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/utils/DataUtil.java @ 6332:f5bb53106ae8

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Remove createBarriersLayer and createBarriers The generated mapfiles did not work and were just confusing. This looks like historical cruft that was never deleted. The real barrier mapfiles are created in the Floodmap state
author Andre Heinecke <aheinecke@intevation.de>
date Thu, 13 Jun 2013 17:24:56 +0200
parents af13ceeba52a
children 3c4efd4b2c19
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.utils;
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10
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11 import java.util.Random;
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12
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13 import gnu.trove.TDoubleArrayList;
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14
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15 public class DataUtil
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16 {
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17 public static boolean guessWaterIncreasing(TDoubleArrayList data) {
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18 return guessWaterIncreasing(data, 0.05f);
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19 }
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20
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21 public static boolean guessWaterIncreasing(TDoubleArrayList data, float factor) {
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parents: 1163
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22 int N = data.size();
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23 if (N < 2) return false;
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24
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25 int samples = (int)(factor*N) + 1;
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26
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27 int up = 0;
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28
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29 Random rand = new Random();
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30
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31 for (int i = 0; i < samples; ++i) {
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32 int pos2 = rand.nextInt(N-1) + 1;
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33 int pos1 = rand.nextInt(pos2);
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parents: 1163
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34 double w1 = data.getQuick(pos1);
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35 double w2 = data.getQuick(pos2);
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36 if (w2 > w1) ++up;
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37 }
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38
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39 return up > samples/2;
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40 }
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41 }
1982
8afd6a9bb244 Cosmetics.
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42 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org