Are they equivalent ?

[Henri Girard]

I am surprise because graph is different it should n't because the adjacency matrix is the same ?

W=graphs.WheelGraph(4);W.show();W.adjacency_matrix ()

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H=Graph(W.adjacency_matrix ());H.show();H.adjacency_matrix ()

[Jori Mäntysalo]

On Sun, 1 Apr 2018, Henri Girard wrote:

> I am surprise because graph is different it should n't because the adjacency
> matrix is the same ?

They are:

sage: W = graphs.WheelGraph(4)
sage: H = Graph(W.adjacency_matrix ())
sage: W == H
True

However, for almost every built-in graph or graph family Sage also knows
some "nice" way to draw it. For other graphs it tries to found a "nice"
drawing by partly randomized algorithm.

You can also try

H.show(layout='planar')

--
Jori Mäntysalo

[Henri Girard]

Thank you... Planar do it