/* * The JTS Topology Suite is a collection of Java classes that * implement the fundamental operations required to validate a given * geo-spatial data set to a known topological specification. * * Copyright (C) 2001 Vivid Solutions * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * For more information, contact: * * Vivid Solutions * Suite #1A * 2328 Government Street * Victoria BC V8T 5G5 * Canada * * (250)385-6040 * www.vividsolutions.com */ package com.vividsolutions.jtsexample.operation.linemerge; import com.vividsolutions.jts.geom.Geometry; import com.vividsolutions.jts.io.WKTReader; import com.vividsolutions.jts.operation.linemerge.LineMerger; import java.util.ArrayList; import java.util.Collection; /** * Example of using the LineMerger class to sew together a set of fully noded * linestrings. * * @version 1.7 */ public class LineMergeExample { private WKTReader reader = new WKTReader(); public LineMergeExample() { } public static void main(String[] args) throws Exception { LineMergeExample test = new LineMergeExample(); try { test.run(); } catch (Exception ex) { ex.printStackTrace(); } } void run() throws Exception { Collection lineStrings = getData(); LineMerger lineMerger = new LineMerger(); lineMerger.add(lineStrings); Collection mergedLineStrings = lineMerger.getMergedLineStrings(); System.out.println("Lines formed (" + mergedLineStrings.size() + "):"); System.out.println(mergedLineStrings); } Collection getData() { Collection lines = new ArrayList(); lines.add(read("LINESTRING (220 160, 240 150, 270 150, 290 170)")); lines.add(read("LINESTRING (60 210, 30 190, 30 160)")); lines.add(read("LINESTRING (70 430, 100 430, 120 420, 140 400)")); lines.add(read("LINESTRING (160 310, 160 280, 160 250, 170 230)")); lines.add(read("LINESTRING (170 230, 180 210, 200 180, 220 160)")); lines.add(read("LINESTRING (30 160, 40 150, 70 150)")); lines.add(read("LINESTRING (160 310, 200 330, 220 340, 240 360)")); lines.add(read("LINESTRING (140 400, 150 370, 160 340, 160 310)")); lines.add(read("LINESTRING (160 310, 130 300, 100 290, 70 270)")); lines.add(read("LINESTRING (240 360, 260 390, 260 410, 250 430)")); lines.add(read("LINESTRING (70 150, 100 180, 100 200)")); lines.add(read("LINESTRING (70 270, 60 260, 50 240, 50 220, 60 210)")); lines.add(read("LINESTRING (100 200, 90 210, 60 210)")); return lines; } Geometry read(String lineWKT) { try { Geometry geom = reader.read(lineWKT); return geom; } catch (Exception ex) { ex.printStackTrace(); } return null; } }