On Sun, Jan 18, 2015 at 7:33 PM, William Stein <[email protected]> wrote:
> On Sun, Jan 18, 2015 at 6:44 PM, Jonathan <[email protected]> wrote:
>> Yep, polytopes.blah().show(), is fine although I do not like the default
>> green as much (It was chosen to differentiate it from the lines and
>> vertices, I assume). Yes, I think this is as good or better. Should we put
>> a ticket to simply make the regular solid calls go to polytope.blah.show().
>> I'm not sure how else they are being used.
>>
>> I also wonder if the vertex bug is hiding in these as well?
>>
>> Now, for the reason I encountered the bug...I was goofing around (I needed a
>> break from reviewing proposals) trying to make my 3-D version of the logo (a
>> few years back :) ) adaptable. It looks like most of what I want is
>> available here. The problem is I never would have found them without the
>> above pointers.
>>
>> ASIDE: if you start with "geometry." or "sage.geometry." and start working
>> through tab completion I am not sure you would ever get to the construction
>> polytopes.blah().show() for the regular solids. You don't get to the regular
>> solids until "sage.geometry.polyhedron.library.Polytopes.blah(). Why would
>> I guess that I can shorten the call to "polytopes.blah().show()? Why does
>> polytopes (part of geometry) show up as a root level class? I'm beginning
>> to think a committee needs to be tasked with restructuring the class
>> hierarchy so that things can be found. Sagemath is actually quite
>> wonderful, but it can be hard to find what you want.
>
> I would guess that most people find functionality in Sage by searching
> with google (or whatever, or even the search_doc function), not via
> tab completing little by little. I certainly would never consider
> trying to find anything that way.
>
> Instead of a committee to break all the code anybody ever wrote for
> Sage (which would be undesirable, akin to Python2 --> Python3),
> instead effort would be much better spent in making it easier to do a
> global search of the documentation and functionality. I'm sure that
> could be improved a lot. It would be interesting to hear ideas along
> those lines.
As an exercise, try googling
sage polyhedron plot
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#safe=off&q=sage%20polyhedron%20plot
The first hit, for me at least, is pretty useful.
William
>
>
>>
>> Jonathan
>>
>> On Sunday, January 18, 2015 at 8:21:40 PM UTC-6, William wrote:
>>>
>>> On Sun, Jan 18, 2015 at 6:16 PM, William Stein <[email protected]> wrote:
>>> > On Sun, Jan 18, 2015 at 6:03 PM, Jonathan <[email protected]> wrote:
>>> >> OK...I haven't checked yet, but I'll bet show on all the polyhedra
>>> >> primatives does something similar.
>>> >
>>> > Sort of, though it's significantly different than what the 3d plotting
>>> > produces. polytopes.blah.show()
>>> > makes a 3d graphic with edges and dots at vertices, etc... so it
>>> > looks a lot different (maybe better).
>>> >
>>> >> Re: Williams comment that we would have to deprecate it...could we
>>> >> effectively subsume it in the geometry types, while keeping the name
>>> >> and
>>> >> behavior?
>>> >
>>> > Yes, that should likely possible and would be very desirable.
>>> >
>>> >> Do the polyhedra know about their symmetry?
>>> >
>>> > I don't think so -- they are just used for plotting.
>>> >
>>> >> That would be a nice
>>> >> way of leading people to those tools?
>>> >
>>> > Yes, definitely.
>>> >
>>> > (NOTE: In case anybody tries, plotting of dodecahedrons in particular
>>> > is currently broken/not implemented in SageMathCloud, since it
>>> > involves polytopes defined by faces that have many vertices, and the
>>> > renderer doesn't cover that case.)
>>> >
>>> >>
>>> >> Jonathan
>>> >>
>>> >>
>>> >> On Sunday, January 18, 2015 at 7:44:25 PM UTC-6, Volker Braun wrote:
>>> >>>
>>> >>> I can confirm the bug. Note that the output of "dodecahedron()" is not
>>> >>> a
>>> >>> Polyhedron, its just a 3d graphics primitive:
>>> >>>
>>> >>> sage: type(dodecahedron())
>>> >>> <type 'sage.plot.plot3d.index_face_set.IndexFaceSet'>
>>> >>>
>>> >>> vs:
>>> >>>
>>> >>> sage: type(polytopes.dodecahedron())
>>> >>> <class
>>> >>>
>>> >>> 'sage.geometry.polyhedron.backend_ppl.Polyhedra_QQ_ppl_with_category.element_class'>
>>> >>>
>>> >>> IMHO the current dodecahedron should just be deleted, or at least
>>> >>> removed
>>> >>> from the global namespace.
>>> >>>
>>> >>>
>>> >>>
>>> >>> On Monday, January 19, 2015 at 1:28:11 AM UTC+1, Jonathan wrote:
>>> >>>>
>>> >>>> sage: DD=dodecahedron()
>>> >>>> sage: print "length of vertex list:"+str(len(DD.vertex_list()))
>>> >>>> length of vertex list:20
>>> >>>> sage: DD.show()
>>> >>>> sage: print "length of vertex list:"+str(len(DD.vertex_list()))
>>> >>>> length of vertex list:60
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> Somehow the show command is causing the verticies to be appended to
>>> >>>> the
>>> >>>> vertex_list two extra times. If others can verify, I will report a
>>> >>>> bug and
>>> >>>> we can start looking for this...
>>> >>>>
>>> >>>> I've seen this on multiple running cases of 6.4.rc1 and 6.4.
>>> >>>>
>>> >>>> Thanks,
>>> >>>> Jonathan
>>> >>
>>> >> --
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>>> >
>>> >
>>> >
>>> > --
>>> > William Stein
>>> > Professor of Mathematics
>>> > University of Washington
>>> > http://wstein.org
>>>
>>>
>>>
>>> --
>>> William Stein
>>> Professor of Mathematics
>>> University of Washington
>>> http://wstein.org
>>
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>
>
>
> --
> William Stein
> Professor of Mathematics
> University of Washington
> http://wstein.org
--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org
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