On Fri, Jul 22, 2011 at 8:57 PM, Eviatar <eviatarb...@gmail.com> wrote: > Oh, I see. It would be nice if Sage was more modular. > > Good luck with Qsnake!
And things like Qsnake are possible... because Python is very modular. -- William > On Jul 22, 7:51 pm, Ondřej Čertík <ondrej.cer...@gmail.com> wrote: >> On Fri, Jul 22, 2011 at 6:19 PM, William Stein <wst...@gmail.com> wrote: >> > On Fri, Jul 22, 2011 at 5:56 PM, Eviatar <eviatarb...@gmail.com> wrote: >> >> Just out of curiosity: why are you forking a separate project instead >> >> of developing Sage? >> >> > I think the main issue is that Sage contains a lot of dependencies and >> > code that are not needed for people doing Finite Element Method (say) >> > work. But nonetheless, there are useful ideas in how Sage is >> > constructed, which Ondrej's project also benefits from. >> >> Also so that we can quickly release a new version, update a package >> and so on. Also, what I did in Qsnake is that I wrote a completely >> new build system (in pure Python, as one simple file) and also I have >> added a lot of new packages, not in standard Sage. >> By doing it separately, I can simply create a version, that "just >> works". Plus I wanted to use git and github etc., as these tools make >> me a lot more productive (subjective reason). >> >> In any case, I have strictly stayed with the SPKG packages, so that >> any improvements (let's say after my new packages mature) can be >> incorporated in standard Sage, eventually. >> >> So I view it as simply organizing the work, rather than a competing fork. >> >> >> >> > As a related example, shortly after I started Sage (in 2005), Ondrej >> > started Sympy (in 2006), which does symbolic calculus. At least for >> > a while, much of what Sympy did, one could do more quickly in Sage. >> > That said, I just went to the app store recently and downloaded a >> > program called PythonMath, which I find handy on occasion: it turns >> > out PythonMath is basically Python + Sympy, which is _vastly_ easier >> > to port to the iPhone than Sage. >> >> Yes. For the kind of math that I do, in daily research (electronic >> structure calculations and other quantum mechanics stuff), sympy >> always worked great, and having no other depenencies than Python, it >> was exactly what I always needed. For the kind of math that William >> does, Sage has always worked much better. Also, sympy is just a >> symbolic library (and that's it, so one has to use other libraries for >> plotting, numerics, notebook...), while Sage is everything. >> >> And thus the motivation for Qsnake --- to have a program, that >> contains everything and "just works". I would put Qsnake on the same >> level as psage:http://purple.sagemath.org/, if I understand the >> motivation of psage correctly, it's aim is also to eventually >> integrate the useful packages (once they mature from "research" to >> "production") into Sage. Looking here: >> >> http://purple.sagemath.org/goals.html >> >> That's pretty much the same motivation for Qsnake. Except that I need >> a different set of packages (and I need Fortran). >> >> Ideally, there would be a huge repository of SPKG packages (just like >> the huge repository that Ubuntu has, with almost everything), and one >> could quickly install just what one needs. So I am trying to figure >> this out too with Qsnake. But it's easier said than done. >> >> Ondrej > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
