Matplotlib: 3D Arrows and 3D Annotations

PY-Drawing3D.ipynb

Thanks for the gist! Is there a license for it?

One suggestion for this code is add return arrow to the end of def _arrow3D to read:

def _arrow3D(ax, x, y, z, dx, dy, dz, *args, **kwargs):
    '''Add an 3d arrow to an `Axes3D` instance.'''

    arrow = Arrow3D(x, y, z, dx, dy, dz, *args, **kwargs)
    ax.add_artist(arrow)
    return arrow

This will make other artist3d functions work, such as set_visible

P.S. Would you like to PR to matplotlib? This would be helpful...

tested on November 12, 2023 and works

Thanks!