Thanks -- I was half-expecting Nathann to be the first to reply! I don't (or rather, did not) know what D3 is...and I think I will wait for someone else to do that for the LMFDB & isogeny graphs. Meanwhile it would still be nice to cut out the whitespace.
John On 19 November 2015 at 12:19, William Stein <wst...@gmail.com> wrote: > On Thu, Nov 19, 2015 at 8:55 AM, John Cremona <john.crem...@gmail.com> wrote: >> I need to plot some graphs, save them and embed the results in a web >> page, for example this: http://www.lmfdb.org/EllipticCurve/Q/11/a/ >> >> The graph itself is created from its adjacency matrix (with some >> adjustment of the vertex positions to look good for some of the more >> complicated examples). But there is too much whitespace around the >> resulting plot (which I go on to encode using >> matplotlib.backends.backend_agg.FigureCanvasAgg). Nothing I do seems >> to get rid of it! >> >> >> To test this, try >> >> sage: EllipticCurve('11a1').isogeny_graph().show() >> >> >> Instead of a square box around this graph I would like a rectangle >> which matches its shape without all the whitespace at the top and >> bottom. Not that other graphs have different shapes! e.g. >> EllipticCurve('15a1').isogeny_graph().show() > > Aside for the long run: since you're presenting this information on > the web, it would be way nicer to use D3. E.g., like this: > > https://cloud.sagemath.com/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/files/support/2015-11-19-isogeny-cremona.sagews > > (this uses some code that Nathann Cohen sent me) > > Note that the renderer here evidently doesn't have edge labels implemented. > But using D3 (or something built on it) is the future for showing > "networks" in a webpage. There's many javascript libraries that > attempt to solve this problem these days. > >> >> John >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sage-support" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sage-support+unsubscr...@googlegroups.com. >> To post to this group, send email to sage-support@googlegroups.com. >> Visit this group at http://groups.google.com/group/sage-support. >> For more options, visit https://groups.google.com/d/optout. > > > > -- > William (http://wstein.org) > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
