Column major Eigen matrix

[petrasvestartas]

Is there any example how to transfer python numpy to c++ and back as a column major eigen matrix?

I am successfully using Row Major Eigen matrix, but due to specific C++ workflow I must use Column Major.
I have no success in transferring such matrix.

[wjakob]

I don't see why this would not work, if your input matrix has the right type and is column major. Can you open an issue with a reproducer?

[petrasvestartas]

I documented the way by carefully reading nanobind manual:

https://github.com/petrasvestartas/compas_nanobind_package_template/blob/main/%7B%7Bcookiecutter.project_folder%7D%7D/tutorial/eigen.cpp
https://github.com/petrasvestartas/compas_nanobind_package_template/blob/main/%7B%7Bcookiecutter.project_folder%7D%7D/tutorial/eigen.py

I use cookiecutter templates to automatically generate python bindings.