At some point you said that "this is what graphs should look like in Sage, though they don't".
Well, it looks like the answer is named #14953 and has been waiting for a review since ... 10 months :-P http://trac.sagemath.org/ticket/14953 Nathann On Thursday, May 22, 2014 12:24:31 AM UTC+2, William wrote: > > On Wed, May 21, 2014 at 11:25 AM, William Stein > <wst...@gmail.com<javascript:>> > wrote: > > On Wed, May 21, 2014 at 10:52 AM, William Stein > > <wst...@gmail.com<javascript:>> > wrote: > >> Hi, > >> > >> I'm about to give a very intro talk about graph theory in Sage, and > > > > > https://github.com/williamstein/sage2014/blob/master/lectures/2014-05-21/2014-05-21.pdf > > > And the screencast: http://youtu.be/4a1QZJ8aKUM > > > > > >> the graph database section [1] of the reference manual begins: "... > >> This class will also interface with the optional database package > >> containing all unlabeled graphs with 8 or fewer nodes." > >> > >> I can't find any optional package to install to get these extra graphs > >> up to 8 vertices. Anybody have any idea what happened to this? I > >> realize that this stuff was originally done by Robert Miller and Emily > >> Kirkman, who have moved on to other things (Home Depot and Actuarial > >> work, I think...), but maybe somebody has kept track... If not, we > >> should delete that line from the reference manual. > >> > >> There is a database included in Sage with graphs up to 7 nodes: > >> > >> for k in [1..9]: > >> print k, GraphQuery(display_cols=['num_vertices'], > >> num_vertices=k).number_of() > >> > >> 1 1 > >> 2 2 > >> 3 4 > >> 4 11 > >> 5 34 > >> 6 15 > >> 7 1044 > >> 8 0 > >> 9 0 > >> > >> So the builtin database is pretty tiny -- only just over a thousand > >> graphs total? > >> > >> > >> > >> [1] > http://www.sagemath.org/doc/reference/graphs/sage/graphs/graph_database.html > >> > >> [2] http://artsci.drake.edu/grout/doku.php/graph_database > >> > >> -- > >> William Stein > >> Professor of Mathematics > >> University of Washington > >> http://wstein.org > > > > > > > > -- > > William Stein > > Professor of Mathematics > > University of Washington > > http://wstein.org > > > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
