矩陣與 矩陣加法

#include <iostream> #include <Eigen/Dense> using namespace Eigen; using namespace std; int main() { MatrixXd m(3,3);m(0,0) = 10;m(0,1) = 20;m(0,2) = 120;m(1,0) = 30;m(1,1) = 40;m(1,2) = 340;m(2,0) = 50;m(2,1)= 60;m(2,2)= 560;cout << "m =" << endl << m << endl;auto v=MatrixXd::Constant(3,3,1000);cout << "v =" << endl << v << endl;cout << "m + v =" << endl << m+v << endl; } m =10 20 12030 40 34050 60 560 v = 1000 1000 1000 1000 1000 1000 1000 1000 1000 m + v = 1010 1020 1120 1030 1040 1340 1050 1060 1560

矩陣與向量乘法

#include <iostream> #include <Eigen/Dense> using namespace Eigen; using namespace std; int main() {MatrixXd m = MatrixXd::Random(3,3);m = (m + MatrixXd::Constant(3,3,1.2)) * 50;cout << "m =" << endl << m << endl;VectorXd v(3);v << 1, 2, 3;cout << "m * v =" << endl << m * v << endl; } m = 10.0008 55.865 14.7045 23.1538 63.2767 77.8865 85.5605 31.8959 77.9296 m * v = 165.844 383.367 383.141

總結

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