Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/statistics/HorizontalProfileVectorStatistics.java @ 1145:dfe1ac687c7f tip
added tags
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 28 Sep 2012 12:16:15 +0200 |
parents | f953c9a559d8 |
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1 /* |
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2 * Copyright (c) 2010 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 |
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9 package de.intevation.gnv.statistics; |
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10 |
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11 import com.vividsolutions.jts.geom.Point; |
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12 import com.vividsolutions.jts.io.ParseException; |
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13 import com.vividsolutions.jts.io.WKTReader; |
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14 |
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15 import de.intevation.gnv.geobackend.base.Result; |
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16 import de.intevation.gnv.geobackend.base.ResultDescriptor; |
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17 |
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18 import de.intevation.gnv.utils.DistanceCalculator; |
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19 |
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20 import java.sql.SQLException; |
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21 |
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22 import org.apache.log4j.Logger; |
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23 |
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24 /** |
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25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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26 */ |
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27 public class HorizontalProfileVectorStatistics |
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28 extends VectorStatistics |
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29 { |
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30 |
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31 private static Logger logger = |
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32 Logger.getLogger(HorizontalProfileVectorStatistics.class); |
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33 |
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34 private WKTReader wktReader = new WKTReader(); |
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35 |
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36 private double distance; |
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37 |
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38 |
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39 public HorizontalProfileVectorStatistics() { |
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40 distance = 0; |
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41 } |
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42 |
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43 |
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44 protected void clear() { |
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45 distance = 0; |
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46 } |
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47 |
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48 |
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49 protected int getValueIdx(ResultDescriptor rd) { |
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50 return rd.getColumnIndex("YORDINATE"); |
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51 } |
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52 |
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53 |
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54 protected double calculateXOrdinateValue(Result prev, Result row) |
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55 throws SQLException |
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56 { |
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57 try { |
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58 Point start = (Point) wktReader.read(prev.getString("SHAPE")); |
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59 Point current = (Point) wktReader.read(row.getString("SHAPE")); |
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60 |
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61 double delta = DistanceCalculator.calculateDistance(start, current); |
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62 |
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63 distance = !Double.isNaN(delta) ? distance + delta : distance; |
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64 } |
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65 catch (ParseException e) { |
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66 logger.error(e,e); |
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67 } |
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68 return distance; |
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69 } |
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70 } |
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71 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |