Created by: chrisrothUT
This implements translations, rotations and reflections on graphs generated by Lattice.py.
Let’s define a square grid to show how we use this
graph = nk.graph.Lattice(basis_vectors = [[1,0],[0,1]], extent=[5,5])
We can generate a SymmGroup with translations by the basis vectors as follows
graph.basis_translations()
In order to generate rotations we need to specify the period. This will generate the C4 rotational symmetry group
graph.planar_rotations(period=4,axes=(0,1))
If we specify a period that doesn’t map the lattice to itself we get a value error. Finally we can generate the reflections about a plane
graph.reflections(axis=0)
This should work for arbitrary dimensions (I only tested a cube). @femtobit @PhilipVinc @attila-i-szabo can you help me bug hunt?
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