1 typedef Matrix<float,Dynamic,2> DataMatrix; 2 // let's generate some samples on the 3D plane of equation z = 2x+3y (with some noise) 3 DataMatrix samples = DataMatrix::Random(12,2); 4 VectorXf elevations = 2*samples.col(0) + 3*samples.col(1) + VectorXf::Random(12)*0.1; 5 // and let's solve samples * [x y]^T = elevations in least square sense: 6 Matrix<float,2,1> xy 7 = (samples.adjoint() * samples).llt().solve((samples.adjoint()*elevations)); 8 cout << xy << endl; 9