mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-27 07:29:52 +08:00
25 lines
440 B
C++
25 lines
440 B
C++
#include <iostream>
|
|
#include <Eigen/Dense>
|
|
|
|
using namespace std;
|
|
using namespace Eigen;
|
|
|
|
int main()
|
|
{
|
|
Eigen::MatrixXf m(2,4);
|
|
Eigen::VectorXf v(2);
|
|
|
|
m << 1, 23, 6, 9,
|
|
3, 11, 7, 2;
|
|
|
|
v << 2,
|
|
3;
|
|
|
|
MatrixXf::Index index;
|
|
// find nearest neighbour
|
|
(m.colwise() - v).colwise().squaredNorm().minCoeff(&index);
|
|
|
|
cout << "Nearest neighbour is column " << index << ":" << endl;
|
|
cout << m.col(index) << endl;
|
|
}
|