1 MatrixXd m(2,3); 2 m << 1,2,3,4,5,6; 3 cout << "here's the 2x3 matrix m:" << endl << m << endl; 4 cout << "let's resize m to 3x2. This is a conservative resizing because 2*3==3*2." << endl; 5 m.resize(3,2); 6 cout << "here's the 3x2 matrix m:" << endl << m << endl; 7 cout << "now let's resize m to size 2x2. This is NOT a conservative resizing, so it becomes uninitialized:" << endl; 8 m.resize(2,2); 9 cout << m << endl; 10
