cannot get "Vector3.rotate_lattice()" working

[pavlo2025]

Dear All,

Thank you for the great software tool and supporting it and user community all these years.

I am not sure if I came across a bug or a simply using the "rotate_lattice" wrong.

Here is the Python code:
geometry_lattice = mp.Vector3.rotate_lattice(axis=mp.Vector3(0, 0, 1), theta=30*math.pi/180, lat=geometry_lattice)

Whenever I execute it, it throws out the error:
TypeError: Vector3.rotate_lattice() missing 1 required positional argument: 'self'

I am using it wrong?

best wishes,
pavlo

P.S. I am using the latest MPB and MEEP versions.

[oskooi]

rotate_lattice is a member function of the class Vector3. This function therefore can only be called using a class object of Vector3. In your example, mp.Vector3.rotate_lattice is not a class object.