Passing 3d Numpy Array From Cython To C++

I recently used cython to speedup an application, and now struggle with passing a 3D numpy array from cython to a C++ function. I can call my function from a python test script, bu

Solution 1:

What I finally ended up doing was passing a 1D-array to C++, and wrote a wrapper class for it to make the transformations from 3D to 1D coordinates. My actual program had its internal datastructures. After finishing its work, I passed the wrapper to the main class and it copied its state over to the wrapped 1D buffer.