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