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#include <Eigen/Core>
#include <iostream>
using namespace std;
using namespace Eigen;
template<typename Derived>
const Reshaped<const Derived>
reshape_helper(const MatrixBase<Derived>& m, int rows, int cols)
{
return Reshaped<const Derived>(m.derived(), rows, cols);
}
int main(int, char**)
{
MatrixXd m(3, 4);
m << 1, 4, 7, 10,
2, 5, 8, 11,
3, 6, 9, 12;
cout << m << endl;
Ref<const MatrixXd> n = reshape_helper(m, 2, 6);
cout << "Matrix m is:" << endl << m << endl;
cout << "Matrix n is:" << endl << n << endl;
}
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