How can I plot a simple tree diagram like the first one of the following link?
http://reference.wolfram.com/mathemat...
Is it possible to choose the orientation (from left to right) and display edge labels?
Thank you.
You can try
T=Graph()
T.add_edges([[1,2],[2,4],[3,6],[4,8],[5,10],[6,12],[1,3],[2,5],[3,7],[4,9],[5,11],[6,13]]);
T.show(layout='tree',tree_root=1,tree_orientation='down')The manual does not specify anything about left to right orientation so it might not be currently implemented. Edge labels are disabled by default and you can enable them with the argument edge_labels=True. You can check the manual for further details.
Thank you. That's exactly what I wanted to do. Now, I'm trying to add labels but it seems that the \displaystyle command doesn't work.
I added edge_labels=True and labels are displayed. I need to display some fractions but they are very small and I'd like to have them larger.
If this answered your question, please mark it as accepted. Regarding the second question, this has been asked previously [here](http://ask.sagemath.org/question/664/font-size-for-edge-label).
Asked: 12 years ago
Seen: 593 times
Last updated: Feb 23 '13
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