Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/utils/DataUtil.java @ 4573:b87073a05f9d
flys-client: Patch to render combobox options as clickable links.
The way of passing data arguments to the links and further to
the Artifact feeding service is somewhat hacked and should be
refactored (later...).
author | Christian Lins <christian.lins@intevation.de> |
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date | Tue, 27 Nov 2012 12:50:10 +0100 |
parents | 5642a83420f2 |
children |
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package de.intevation.flys.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 :