Eigen - Get a Matrix from a Map?
I'm Using Eigen: :Map to Get Access to Create an Object from a C-Array. I Would Like to Save That Object as a Member Variable of Type Matrixxf. How Do I Do...
I'm using Eigen::Map to get access to create an object from a C-array. I would like to save that object as a member variable of type MatrixXf.
How do I do that? I couldn't find a way to convert the Map to a Matrix.
Thanks.
2 Answers
Just use operator=:
MatrixXd mat;
mat = Map<MatrixXd>(data, rows, cols);
I have encountered the same issue but vector is constant, then you have to do it following way as @ggael proposed,
Eigen::MatrixXd mat = Eigen::Map<const Eigen::MatrixXd>(x.data(), rows, cols);
where x can be either const Eigen::VectorXd x or const std::vector<double> or C type array.
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
