Yes, I say that..

...and one point to notice : maybe  my graph has not the condition

in addition, each face of the layout, including the outer face, is assumed 
to be a triangle


given in 

https://www.ics.uci.edu/~eppstein/gina/schnyder/

because when you see the planar plot, or the result of faces() 

[('F', 'B'), ('B', 'D'), ('D', 'A'), ('A', 'E'), ('E', 'C'), ('C', 'G'), ('G', 
'F')],

is a face not triangular


-- 
You received this message because you are subscribed to the Google Groups 
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-support.
For more options, visit https://groups.google.com/d/optout.

Reply via email to