Am 15.11.21 um 17:55 schrieb Monecke, Stephan:
Hi together!
I just noticed that vertices that had been saved within an external list
are not being updated when filtering the graph:
>>> G.set_edge_filter( G.edge_properties[ 'e_isbus'], inverted=True)
>>> G.set_vertex_filter(G.vertex_properties['v_isbus'], inverted=True)
>>> print( [ int(n) for n in node.all_neighbors() ] )
[101, 22, 265, 496, 518, 22, 265, 496, 101, 518]
>>> print( [ int(n) for n in G.vertex( int(node) ).all_neighbors() ] )
[101, 22, 265, 22, 265, 101]
Did I miss something or is this a bug?
I don't view this as a bug. Vertex descriptors are supposed to be
ephemeral objects that you create in an ad hoc way. For performance
reasons they keep a direct pointer to the graph view that created them.
If you want to store vertices and look them up, it's better just to
store their index, and get a descriptor at the time you need it.
--
Tiago de Paula Peixoto <[email protected]>
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