#18828: Export graph to file
-------------------------+-------------------------------------------------
Reporter: | Owner:
ncohen | Status: needs_review
Type: | Milestone: sage-6.8
enhancement | Resolution:
Priority: major | Merged in:
Component: graph | Reviewers:
theory | Work issues:
Keywords: | Commit:
Authors: | f7c4a18508cf66a958ffe3110754916d406c0ee3
Nathann Cohen | Stopgaps:
Report Upstream: N/A |
Branch: |
u/ncohen/18828 |
Dependencies: |
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Comment (by dcoudert):
This method is clearly useful. It is too boring to import networkx each
time you want to read/write a graph from/to a file.
> > * could you make a test that checks if the output is correct?
>
> I added one check, but it is unpleasant in many ways. First, the
(integer) vertices become strings, and then each edge gets a label
encoding a weight. Well, that's networkx...
By default method `networx.write_edgelist` sets parameter `data=True`. So
your method produce a weighted edgelist instead of an edgelist
{{{
0 1 {}
}}}
instead of
{{{
0 1
}}}
I understand that you prefer short and fast code, but since writing to a
file is slow anyway, we could spend some computation time to refine the
behavior of the method.
David
--
Ticket URL: <http://trac.sagemath.org/ticket/18828#comment:9>
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