Is there a way to create an ultrametric tree in ETE (preferably ete2) for a tree that contains some internal branch attribute labels. I can make one with no attributes set, however I cannot make one when my tree has the attribute faces added to internal nodes.
Any solved this problem before ?
Thanks., R
EDIT: More detail
My tree currently looks something like this :http://imgur.com/cn04ylK
I visualize the attributes by grabbing with AttrFace and using the node.add_face function in a custom Treestyle layout function.
1 answer
Not completely trivial - you would need to know the exact size of the graphical items associated to internal faces, and the compensate branches as needed.
Another option would be to use a custom layout where you add all tip names (or other leaf faces) in "aligned" position, and then turn TreeStyle.draw_guiding_lines=True. The effect should be like having all leave nodes aligned by compensating their branch lengths.
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Have you tried
format=3, features=[your attributes](which created a NHX extended newick)?For example,
'((D:0.723274[&&NHX:vowel=False],F:0.567784[&&NHX:vowel=False])E:0.067192[&&NHX:vowel=True],(B:0.279326[&&NHX:vowel=False],H:0.756049[&&NHX:vowel=False])B:0.807788[&&NHX:vowel=False]);'
The following page shows an example of adding attributes to internal nodes.
http://etetoolkit.org/docs/latest/tutorial/tutorial_trees.html#node-annotation
In the worse case, you can always code your attribute to the node names.
Ill add a little more detail to the question. I can add attributes. I just need to be able to add branch labels to both leaf nodes and internal nodes and output a tree with aligned taxa.