1 #include <iostream> 2 #include <Eigen/Dense> 3 4 using namespace std; 5 int main() 6 { 7 Eigen::Matrix2d mat; 8 mat << 1, 2, 9 3, 4; 10 cout << "Here is mat.sum(): " << mat.sum() << endl; 11 cout << "Here is mat.prod(): " << mat.prod() << endl; 12 cout << "Here is mat.mean(): " << mat.mean() << endl; 13 cout << "Here is mat.minCoeff(): " << mat.minCoeff() << endl; 14 cout << "Here is mat.maxCoeff(): " << mat.maxCoeff() << endl; 15 cout << "Here is mat.trace(): " << mat.trace() << endl; 16 } 17