adjacency_from_edges

compas.topology.adjacency_from_edges(edges)

Construct an adjacency dictionary from a set of edges.

Parameters

edges (list) – A list of index pairs.

Returns

dict – A dictionary mapping each index in the list of index pairs to a list of adjacent indices.

Examples

>>> edges = [[0, 1], [0, 2], [0, 3], [0, 4]]
>>> adjacency_from_edges(edges)
{0: [1, 2, 3, 4], 1: [0], 2: [0], 3: [0], 4: [0]}