Hello,

I'm working with sparse matrices in eigen3 c++. I would like to export the matrix to a file which will then be read in matlab.

What is the best way to do this? Can I save it in binary format (faster) or ASCII is needed?

In unsupported/Eigen/SparseExtra you will find a saveMarket("filename", mat) function to export a sparse matrix to ascii matrix market format. That's all we offer for now.

Thanks ggael. That worked. However a sparse binary extract option would be even better.