Mercurial > dive4elements > gnv-client
diff gnv-artifacts/src/main/java/de/intevation/gnv/statistics/HorizontalProfileVectorStatistics.java @ 1078:5659b5c5e4b5
Added statistics for vectorial horizontalprofiles.
gnv-artifacts/trunk@1180 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 09 Jun 2010 07:29:55 +0000 |
parents | |
children | f953c9a559d8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/statistics/HorizontalProfileVectorStatistics.java Wed Jun 09 07:29:55 2010 +0000 @@ -0,0 +1,63 @@ +package de.intevation.gnv.statistics; + +import com.vividsolutions.jts.geom.Point; +import com.vividsolutions.jts.io.ParseException; +import com.vividsolutions.jts.io.WKTReader; + +import de.intevation.gnv.geobackend.base.Result; +import de.intevation.gnv.geobackend.base.ResultDescriptor; + +import de.intevation.gnv.utils.DistanceCalculator; + +import java.sql.SQLException; + +import org.apache.log4j.Logger; + +/** + * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> + */ +public class HorizontalProfileVectorStatistics +extends VectorStatistics +{ + + private static Logger logger = + Logger.getLogger(HorizontalProfileVectorStatistics.class); + + private WKTReader wktReader = new WKTReader(); + + private double distance; + + + public HorizontalProfileVectorStatistics() { + distance = 0; + } + + + protected void clear() { + distance = 0; + } + + + protected int getValueIdx(ResultDescriptor rd) { + return rd.getColumnIndex("YORDINATE"); + } + + + protected double calculateXOrdinateValue(Result prev, Result row) + throws SQLException + { + try { + Point start = (Point) wktReader.read(prev.getString("SHAPE")); + Point current = (Point) wktReader.read(row.getString("SHAPE")); + + double delta = DistanceCalculator.calculateDistance(start, current); + + distance = !Double.isNaN(delta) ? distance + delta : distance; + } + catch (ParseException e) { + logger.error(e,e); + } + return distance; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :