Hello Please note that this kind of question should rather be asked on ask.sagemath.org.
You can use the methods get_pos and set_pos sage: t=graphs.RandomTree(40) sage: tp=t.plot(layout='tree', tree_orientation='right', edge_labels=True, tree_root = 0,save_pos=True) sage: positions = t.get_pos() Then 'positions' contains the coordinates of the vertices. You can use them for a modified graph as follows. sage: g=t.copy() sage: g.add_edge((14,23)) sage: g.set_pos(positions) yours, Frederic Le dimanche 28 juin 2015 17:46:07 UTC+2, Hannah Lorrimore a écrit : > > Hi, > > I'm doing some sage developement for the first time, and my code involves > creating a Graph from a dictionary (d) I generate. So the code is: > > sage: t = Graph(d) > sage: tree_plot = t.plot(layout='tree', tree_orientation='right', > edge_labels=True, tree_root = tree_root) > > where tree_root is some instance of a class (I don’t think the class is > important for the purpose of this question). > > I want to be able to add line objects between specific nodes, just to > demonstrate something visually (I do not want to alter the graph), but I'm > not sure how to do it. I can add the line to the graph object easily, it's > just I'm not sure how to place the line at the specific locations the nodes > are at, or if that's even possible. Importantly I would like the end > product to still be using the tree_orientation=‘right’setup. > > Is this possible? > > Thanks [image: :smile:] > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
