00001 int data[] = {1,2,3,4,5,6,7,8,9}; 00002 Map<RowVectorXi> v(data,4); 00003 cout << "The mapped vector v is: " << v << "\n"; 00004 new (&v) Map<RowVectorXi>(data+4,5); 00005 cout << "Now v is: " << v << "\n";