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createSTElementSetFromShapeFile.cpp

Shows how to create a new Spatial Temporal Element Set (STElementSet) from a shapefile

    /************************************************************************************
    TerraLib - a library for developing GIS applications.
    Copyright © 2001-2004 INPE and Tecgraf/PUC-Rio.

    This code is part of the TerraLib library.
    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.

    You should have received a copy of the GNU Lesser General Public
    License along with this library.

    The authors reassure the license terms regarding the warranties.
    They specifically disclaim any warranties, including, but not limited to,
    the implied warranties of merchantability and fitness for a particular purpose.
    The library provided hereunder is on an "as is" basis, and the authors have no
    obligation to provide maintenance, support, updates, enhancements, or modifications.
    In no event shall INPE and Tecgraf / PUC-Rio be held liable to any party for direct,
    indirect, special, incidental, or consequential damages arising out of the use
    of this library and its documentation.
    *************************************************************************************/
    /*
       This file illustrates an example of how to create a new Spatial Temporal Element
       Set (STElementSet) from a shapefile.

       Author: Karine Reis Ferreira
    */

    #include "../../src/terralib/kernel/TeSTElementSet.h"
    #include "../../src/terralib/drivers/shapelib/TeSTEFunctionsSHP.h"

    int
    main()
    {

               // shape file name with its path
               string filename = "../../examples/data/EstadosBrasil.shp";

               TeSTElementSet  steSet;

               // fills the element set from shape file
               if (!TeSTOSetBuildSHP(steSet,filename))
               {
                          cout << "Erro\n";
                          return 1;
               }

               // prints the number of elements of the element set
               cout << "Number of elements: " << steSet.numElements() << endl;

               TeSTElementSet::iterator it = steSet.begin();
               while ( it != steSet.end())
               {
                          TeSTInstance st = (*it);

                          string desc;
                          // returns the attributes
                          TePropertyVector vectp = st.getPropertyVector();

                          cout << "Id: " << st.objectId() << "\nProperties:\n ";
                          for (unsigned int i=0; i<vectp.size(); i++)
                          {
                                     cout << vectp[i].attr_.rep_.name_ << "  =  ";
                                     cout << vectp[i].value_ << endl;
                          }

                          if (st.hasPolygons())
                          {
                                     const TePolygonSet& ps = st.getPolygons();
                                     cout << "Geometry of " << ps.size() << " polygon(s).\n";
                          }
                          if (st.hasLines())
                          {
                                     const TeLineSet& ls = st.getLines();
                                     cout << "Geometry of " << ls.size() << " line(s).\n";
                          }
                          if (st.hasPoints())
                          {
                                     const TePointSet& pts = st.getPoints();
                                     cout << "Geometry of " << pts.size() << " point(s).\n";
                          }
                          cout << endl;
                          ++it;
               }
               cout << "End\n";
               cout.flush();
               getchar();
               return 0;
    }

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