Hi All,
We are trying to use eigen solver api to solve the problem in which we have a matrix containing vector as the coefficient of it.
Form Ax=B
Able to create a matrix for A(2,2) having a vector like
[ [1,2],[3,4]
[5,6],[7,8] ]
Matrix B(2,1)
[ [1,2]
[1,1] ]
But when I am trying to pass the value to the solver, it is giving fatal error (
Eigen/src/SVD/JacobiSVD.h:714:15: error: no matching function for call to ‘abs(const Scalar&)’ if(abs(m_workMatrix.coeff(p,q))>threshold || abs(m_workMatrix.coeff(q,p)) > threshold).)
Please look into it and suggest what I m missing.
#include <iostream>
#include "Eigen/Dense"
using namespace std;
using namespace Eigen;
int main()
{
Eigen::Matrix< Eigen::RowVector2d, 2, 2> A;
Eigen::Matrix< Eigen::RowVector2d, 2, 1> B;
RowVector2d rv1;
RowVector2d rv2;
RowVector2d rv3;
RowVector2d rv4;
rv1 << 1,2;
rv2 << 3,4;
rv3 << 5,6;
rv4 << 7,8;
cout << "Here is the matrix rv1:\n" << rv1 << endl;
cout << "Here is the matrix rv2:\n" << rv2 << endl;
cout << "Here is the matrix rv3:\n" << rv3 << endl;
cout << "Here is the matrix rv4:\n" << rv4 << endl;
A << rv1,rv2, rv3, rv4;
RowVector2d b1;
RowVector2d b2;
b1 << 1,2;
b2 << 2,1;
B << b1, b2;
cout << "Here is the matrix B(0,0):\n" << B(0,0) << endl;
cout << "Here is the matrix B(0,1):\n" << B(1,0) << endl;
JacobiSVD<Eigen::Matrix<Eigen::RowVector2d, 2, 2>> dec(A);
}
-Rohit Aggarwal