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VertexNamingFunction.md

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Symbols and Functions > WolframModel and WolframModelEvolutionObject > Options >

"VertexNamingFunction"

"VertexNamingFunction" controls the names chosen for vertices, particularly the newly created ones. It can take three values: None , Automatic, and All.

None does not do anything, the vertices in the initial condition are left as-is, and the newly created vertices use symbol names as, i.e., Module[{v}, v] could generate:

In[] := WolframModel[{{1, 2}} -> {{1, 3}, {1, 3}, {3, 2}},
 {{v1, v1}}, 2, "StatesList", "VertexNamingFunction" -> None]
Out[] = {{{v1, v1}}, {{v1, v256479}, {v1, v256479}, {v256479, v1}}, {{v1,
   v256480}, {v1, v256480}, {v256480, v256479}, {v1, v256481}, {v1,
   v256481}, {v256481, v256479}, {v256479, v256482}, {v256479,
   v256482}, {v256482, v1}}}

All renames all vertices as sequential integers, including the ones in the the initial condition, and including ones manually generated in pattern rules:

In[] := WolframModel[{{1, 2}} -> {{1, 3}, {1, 3}, {3, 2}},
 {{v1, v1}}, 2, "StatesList", "VertexNamingFunction" -> All]
Out[] = {{{1, 1}}, {{1, 2}, {1, 2}, {2, 1}}, {{1, 3}, {1, 3}, {3, 2}, {1,
   4}, {1, 4}, {4, 2}, {2, 5}, {2, 5}, {5, 1}}}

Automatic only renames newly created vertices with non-previously-used integers, and leaves the initial condition as-is. It does nothing in the case of pattern rules.

In[] := WolframModel[{{1, 2}} -> {{1, 3}, {1, 3}, {3, 2}},
 {{v1, v1}}, 2, "StatesList", "VertexNamingFunction" -> Automatic]
Out[] = {{{v1, v1}}, {{v1, 1}, {v1, 1}, {1, v1}}, {{v1, 2}, {v1, 2}, {2,
   1}, {v1, 3}, {v1, 3}, {3, 1}, {1, 4}, {1, 4}, {4, v1}}}