Eigen vector3d 默认为列向量

Eigen::Vector3d a(1.0, 2.0, 3.0)
std::cout << "a = \n" << a << std::endl;
std::cout << "a.transepose() = \n" << a.transepose() << std::endl;

输出结果为:
a = 
1.0
2.0
3.0
a.transepose() = 
1.0  2. 0  3.0
 

Eigen::VectorXd all_dt(all_plane_alpha_l.size());
all_dt(i) = alpha_c - alpha_l;   // double - double
std::cout << "all_dt = \n" << all_dt << std::endl;
std::cout << "all_dt.transpose() = \n" << all_dt.transpose() << std::endl;

输出结果为:

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