eigen/MatrixBase__set_8cpp_source.html

 Matrix3i m1;

 m1 << 1, 2, 3,

       4, 5, 6,

       7, 8, 9;

 cout << m1 << endl << endl;

 Matrix3i m2 = Matrix3i::Identity();

 m2.block(0,0, 2,2) << 10, 11, 12, 13;

 cout << m2 << endl << endl;

 Vector2i v1;

 v1 << 14, 15;

 m2 << v1.transpose(), 16,

       v1, m1.block(1,1,2,2);

 cout << m2 << endl;

m1
Matrix3i m1
Definition: MatrixBase_set.cpp:1

m2
MatrixType m2(n_dims)

v1
M1<< 1, 2, 3, 4, 5, 6, 7, 8, 9;Map< RowVectorXf > v1(M1.data(), M1.size())

Eigen::Vector2i
Matrix< int, 2, 1 > Vector2i
2×1 vector of type int.
Definition: Matrix.h:500

Eigen::Matrix3i
Matrix< int, 3, 3 > Matrix3i
3×3 matrix of type int.
Definition: Matrix.h:500