Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/InfoldingColumns.java @ 8653:dbec49147f54
(issue1755) Do not create interpolated themes and disable export of non interpolatable data.
Due to the fact that data can contain NaN's which will be filtered out
before creating the interpolator this requires the actual check
for interpolatable data when data is set in the ResultValue
author | Andre Heinecke <andre.heinecke@intevation.de> |
---|---|
date | Wed, 01 Apr 2015 17:10:03 +0200 |
parents | af13ceeba52a |
children |
line wrap: on
line source
/* 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.artifacts.model; /** A pretty naive pointwise algorithm to find out the columns * of a WSTValueTable which imfold ("umhuellen") a set of WQKMs * in terms of Q. * A better implemention would exploit the fact that the * Qs normally are constant for a while along km. This would * reduce the runtime complexity to only a few Q spans instead * of the pointwise evaluation. */ public class InfoldingColumns { private QRangeTree.QuickQFinder [] qFinders; private boolean [] infoldingColumns; public InfoldingColumns() { } public InfoldingColumns(WstValueTable.Column [] columns) { qFinders = new QRangeTree.QuickQFinder[columns.length]; for (int i = 0; i < qFinders.length; ++i) { qFinders[i] = columns[i].getQRangeTree().new QuickQFinder(); } infoldingColumns = new boolean[columns.length]; } public boolean [] getInfoldingColumns() { return infoldingColumns; } public void markInfoldingColumns(QKms [] qkms) { for (QKms qk: qkms) { markInfoldingColumns(qk); } } public void markInfoldingColumns(QKms qkms) { int N = qkms.size(); int C = qFinders.length-1; for (int i = 0; i < N; ++i) { double km = qkms.getKm(i); double q = qkms.getQ(i); double above = Double.MAX_VALUE; double below = -Double.MAX_VALUE; int aboveIdx = -1; int belowIdx = -1; for (int j = C; j >= 0; --j) { double qc = qFinders[j].findQ(km); if (Double.isNaN(qc)) { continue; } if (qc <= q) { if (qc > below) { below = qc; belowIdx = j; } } else if (qc < above) { // qc > q above = qc; aboveIdx = j; } } if (aboveIdx != -1) { infoldingColumns[aboveIdx] = true; } if (belowIdx != -1) { infoldingColumns[belowIdx] = true; } } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :