#7378: Subdivide edges in a graph
----------------------------+-----------------------------------------------
Reporter: ncohen | Owner: jason
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.4
Component: graph theory | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by mvngu:
Old description:
> It is often useful to subdivide the edges of a graph, so there should be
> a function in Sage for this.
>
> When an edge e between u and v is subdivided in a DiGraph, perhaps the
> best thing to do would be to name the new vertices as (e, 0), (e, 1), (e,
> 2), etc ...
>
> We are left with a similar problem concerning the Graphs and here I have
> to admit I do not know which name to use without inducing some
> orientation..
>
> This being said, it has to be done ! :-)
>
> Nathann
New description:
It is often useful to subdivide the edges of a graph, so there should be a
function in Sage for this.
When an edge e between u and v is subdivided in a DiGraph, perhaps the
best thing to do would be to name the new vertices as (e, 0), (e, 1), (e,
2), etc ...
We are left with a similar problem concerning the Graphs and here I have
to admit I do not know which name to use without inducing some
orientation..
This being said, it has to be done ! :-)
This ticket might conflict with #7608. The patch at #7608 makes a lot of
changes to `sage/graphs/generic_graph.py`, a module that is also touched
by ncohen's patch on this ticket.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7378#comment:4>
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