00001 #include <Eigen/Core> 00002 #include <iostream> 00003 00004 using namespace Eigen; 00005 using namespace std; 00006 00007 int main(void) 00008 { 00009 int const N = 5; 00010 MatrixXi A(N,N); 00011 A.setRandom(); 00012 cout << "A =\n" << A << '\n' << endl; 00013 cout << "A(1..3,:) =\n" << A.middleCols(1,3) << endl; 00014 return 0; 00015 }