1 Matrix3i m1; 2 m1 << 1, 2, 3, 3 4, 5, 6, 4 7, 8, 9; 5 cout << m1 << endl << endl; 6 Matrix3i m2 = Matrix3i::Identity(); 7 m2.block(0,0, 2,2) << 10, 11, 12, 13; 8 cout << m2 << endl << endl; 9 Vector2i v1; 10 v1 << 14, 15; 11 m2 << v1.transpose(), 16, 12 v1, m1.block(1,1,2,2); 13 cout << m2 << endl; 14