#9593: spring layout does not converge on some graphs
----------------------------+-----------------------------------------------
Reporter: cwitty | Owner: jason, ncohen, rlm
Type: defect | Status: new
Priority: major | Milestone:
Component: graph theory | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
----------------------------+-----------------------------------------------
Try the following in 4.5.2.alpha0 (or after applying #9532):
{{{
sage: G = graphs.PetersenGraph()
sage: set_random_seed(0); G.plot(layout='spring', iterations=10000)
sage: set_random_seed(0); G.plot(layout='spring', iterations=10001)
}}}
I get very different-looking graphs. (If you go back and try with
iterations=10000 again, you get the same graph again, showing that #9532
did make it reproducible, at least.)
Maybe some constants need tweaking?
I think this may be causing the problem reported in the first comment on
#9584.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9593>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
