createProximityMatrix.cpp File Reference

#include "../../src/terralib/kernel/TeSTElementSet.h"
#include "../../src/terralib/kernel/TeSTEFunctionsDB.h"
#include "../../src/terralib/kernel/TeGeneralizedProxMatrix.h"
#include "../../src/terralib/drivers/MySQL/TeMySQL.h"

Go to the source code of this file.

Functions
int	main ()

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Function Documentation

int main

(

)

Definition at line 37 of file createProximityMatrix.cpp.

References TeBaseSTInstanceSet< GeometryType, TimeType, InstanceType >::begin(), TeDatabase::close(), TeDatabase::connect(), TeGeneralizedProxMatrix< Set >::constructMatrix(), db, TeBaseSTInstanceSet< GeometryType, TimeType, InstanceType >::end(), TeDatabase::errorMessage(), TeGeneralizedProxMatrix< Set >::getMapNeighbours(), TeDatabase::loadLayer(), TeBaseSTInstanceSet< GeometryType, TimeType, InstanceType >::numElements(), TePOLYGONS, and TeSTOSetBuildDB().

{       
        // Datatabase server parameters
        string host = "localhost";
        string dbname = "DB320RC1";
        string user = "root";
        string password = "vinhas";

        // Open a connection to the DB320RC1 MySQL database 
        TeDatabase* db = new TeMySQL();
        if (!db->connect(host, user, password, dbname))
        {
                cout << "Error: " << db->errorMessage() << endl;
                cout << endl << "Press Enter\n";
                getchar();
                return 1;
        }
        cout << "Connection successful to the database \"" << dbname << "\" on MySQL server \"" << host << "\" !\n";;
                
        
        // Opens a connection to a TerraLib database 
    // Loads a layer named Distritos
        TeLayer* DistritosSP =  new TeLayer("Distritos");
        if (!db->loadLayer(DistritosSP))
        {
            cout << "Fail to load the layer!" << db->errorMessage() << endl;
                db->close();
                cout << endl << "Press Enter\n";
                getchar();
        return 1;
        }

    
        // Creates a STElementSet from DistritosSP layer 
        TeSTElementSet steSet(DistritosSP);

        // Builds the STElementSet with geometries
        vector<string> attrs;
        if(!TeSTOSetBuildDB(&steSet, true, false, attrs))
        {
                cout << "Error! " << endl;
                cout << endl << "Press Enter\n";
                getchar();
                return 1;
        }
        
        // Shows how many elements the elementSet has
        cout << "Number of elements: " <<  steSet.numElements() << endl;

        
        //Create prox matrix strategies         
        TeProxMatrixLocalDistanceStrategy<TeSTElementSet>   sc_dist (&steSet, TePOLYGONS, 12000.00);
        TeGeneralizedProxMatrix<TeSTElementSet> proxMat(&sc_dist); 

        // Builds the proximity matrix
        if(!proxMat.constructMatrix())
        {
                cout << "Error building proximity matrix! " << endl;
                getchar();
                db->close ();
                return 0;
        }

        // Shows the neighbours of each object from proxMat
        TeSTElementSet::iterator it = steSet.begin();
        while ( it != steSet.end())
        {
                cout<< " The neighbours of the element  "<< (*it).objectId() << " are: " << endl;
                        
                // Gets the neighbours of an element
                TeNeighboursMap neighbors = proxMat.getMapNeighbours((*it).objectId());
                TeNeighboursMap::iterator itN = neighbors.begin();
                while (itN != neighbors.end())
                {
                        cout<< "         "<<(*itN).first << endl;
                        ++itN;
                }
                cout << endl;
                ++it;
        }

        
        db->close();
        cout << endl << "Press Enter\n";
        getchar();
        return 0;
}

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