1*bf2c3715SXin Li Matrix3i m1; 2*bf2c3715SXin Li m1 << 1, 2, 3, 3*bf2c3715SXin Li 4, 5, 6, 4*bf2c3715SXin Li 7, 8, 9; 5*bf2c3715SXin Li cout << m1 << endl << endl; 6*bf2c3715SXin Li Matrix3i m2 = Matrix3i::Identity(); 7*bf2c3715SXin Li m2.block(0,0, 2,2) << 10, 11, 12, 13; 8*bf2c3715SXin Li cout << m2 << endl << endl; 9*bf2c3715SXin Li Vector2i v1; 10*bf2c3715SXin Li v1 << 14, 15; 11*bf2c3715SXin Li m2 << v1.transpose(), 16, 12*bf2c3715SXin Li v1, m1.block(1,1,2,2); 13*bf2c3715SXin Li cout << m2 << endl; 14