#19517: Graphs: canonical_label() and return_graph -parameter
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Reporter: jmantysalo | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.10
Component: graph theory | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by jmantysalo):
There is something strange with `bliss` installation, see
https://groups.google.com/forum/#!topic/sage-devel/_1OYNuVNltM
`return_graph` is not converse of `inplace`. I guess. It is badly
documented. What is the meaning of it's output? A list of pairs somehow...
Try
{{{
G = graphs.PetersenGraph()
G.relabel(lambda x: chr(ord('a')+x))
G.canonical_label(return_graph=False)
}}}
And why it deletes vertex positioning contraty to `relabel`? Try for
example
{{{
G = graphs.PetersenGraph()
G.relabel(lambda x: chr(ord('a')+x))
G.show()
G = G.canonical_label()
G.canonical_label().show()
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19517#comment:2>
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