id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,work_issues,upstream,reviewer,author,merged,dependencies,stopgaps
9593,spring layout does not converge on some graphs,cwitty,"jason, ncohen, rlm","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.",defect,new,major,,graph theory,,,rlm,,N/A,,,,,