hiperwalk.graph.integer_lattice.vertex_coordinates

hiperwalk.graph.integer_lattice.vertex_coordinates(self, vertex)

Return the coordinates of the given vertex.

Given the number of a vertex, return the corresponding coordinates in the integer lattice.

Returns:

numpy.ndarray

See also

hiperwalk.Graph.vertex_number

Notes

The vertex number depends on its coordinates and the dimension of the lattice dim. If the coordinates of a vertex are (v[0], ..., v[n-1]), its number is v[n-1] + dim[n-1]*v[n-2] + ... + dim[n-1]*...*dim[1]*v[0].

Examples

The methods vertex_coordinates is the inverse of vertex_number, and vice versa.

>>> g = hpw.IntegerLattice((3, 3, 3))
>>> tuple(g.vertex_coordinates(0))
(0, 0, 0)
>>> g.vertex_number((0, 0, 0))
0
>>> tuple(g.vertex_coordinates(13))
(1, 1, 1)
>>> g.vertex_number((1, 1, 1))
13