Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/utils/DataUtil.java @ 6332:f5bb53106ae8
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> |
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date | Thu, 13 Jun 2013 17:24:56 +0200 |
parents | af13ceeba52a |
children | 3c4efd4b2c19 |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.utils; import java.util.Random; import gnu.trove.TDoubleArrayList; public class DataUtil { public static boolean guessWaterIncreasing(TDoubleArrayList data) { return guessWaterIncreasing(data, 0.05f); } public static boolean guessWaterIncreasing(TDoubleArrayList data, float factor) { int N = data.size(); if (N < 2) return false; int samples = (int)(factor*N) + 1; int up = 0; Random rand = new Random(); for (int i = 0; i < samples; ++i) { int pos2 = rand.nextInt(N-1) + 1; int pos1 = rand.nextInt(pos2); double w1 = data.getQuick(pos1); double w2 = data.getQuick(pos2); if (w2 > w1) ++up; } return up > samples/2; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :