[ALPS-users] Spin configurations in 3D Heisenberg model

Dear ALPS users, I am trying to understand the generation of spin configurations for a 3D classical Heisenberg model in the ALPS spinmc simualtions. In this regard, I am interested to know that the spin configurations in ALPS for 3D systems are parametrized in the cylindrical or spherical coordinate system. I am eagerly looking forward for your reply I thank you in advance for your time and consideration. with best regards Sunil