| #include <iostream> | |
| #include <Eigen/Dense> | |
| int main() { | |
| Eigen::MatrixXf m(2, 4); | |
| Eigen::VectorXf v(2); | |
| m << 1, 23, 6, 9, 3, 11, 7, 2; | |
| v << 2, 3; | |
| Eigen::Index index; | |
| // find nearest neighbour | |
| (m.colwise() - v).colwise().squaredNorm().minCoeff(&index); | |
| std::cout << "Nearest neighbour is column " << index << ":" << std::endl; | |
| std::cout << m.col(index) << std::endl; | |
| } |