On Wed, Mar 23, 2016 at 10:15 AM, Aaron Meurer <[email protected]> wrote: > On Wed, Mar 23, 2016 at 11:50 AM, Ondřej Čertík <[email protected]> > wrote: >> Hi Nico, >> >> On Tue, Mar 22, 2016 at 6:44 PM, Nicolas Jimenez <[email protected]> >> wrote: >>> Hi all, >>> >>> Ondrej and I have been discussing changes for sympy gamma that would make >>> the project more useable for the Mathpix project (http://mathpix.com/). Our >>> main issues with the software are the following: >> >> Thanks a lot for posting the feedback here. >> >>> >>> 1. Evaluation of Sympy expressions is string based and uses 'eval'. This >>> is problematic for us as we are using a Latex parser which directly >>> generates a Sympy object: >>> https://github.com/augustt198/latex2sympy/tree/master. >> >> I think it should be possible to make sympy gamma to take a latex input as >> well. >> >>> >>> 2. Plotting is done server side and is not robust. Computing the points >>> should be done client side in javascript for greater responsiveness. >> >> This could be implemented by extending sympy's code generation to also >> generate JavaScript (we already do C and Fortran). Then we would need >> to use some JavaScript library that implements the mathematical >> functions. It might not be easy to do for some special functions that >> do not (yet) have a JavaScript implementation, but for most elementary >> functions this should work great, and it should allow the plot to be a >> lot more responsive. I think that's a good idea. > > There is jscode(). It may need to be improved, but the work is already > started there. > >> >>> >>> 3. Too much display logic in templates and server side code. For example, >>> all the code in >>> https://github.com/sympy/sympy_gamma/blob/master/templates/card.html could >>> be distilled into a single ReactJS component. Moving as much of the code as >>> possible into Javascript would go a long way into making the code easier to >>> embed in people's web app. There is too much dependence on Django and the >>> Google App Engine. Porting the app to using Flask should be >>> straightforward, but this is far from being the case. If SympyGamma was a >>> thin API to Sympy it would be much easier to use / maintain. >> >> Yes, we should probably move to Flask or some other lightweight >> framework. I also heard good things about ReactJS (which was not >> available when I started sympy gamma). >> >> >> Mvnnn, if you are interested, I think the above would be very useful >> improvements to sympy gamma. >> >> Ondrej > > IMHO we should also consider moving away from the app engine. There > are better alternatives these days. Consider for instance tmpnb.org, > which runs a full Python instance (no timers) and you can install any > module you want. The whole thing runs in a Docker container (which > didn't even exist when we started Gamma).
Definitely. E.g. if we move to Flask, then there is an adapter to the AppEngine, but it can also be used elsewhere. There are other frameworks now as well. Ondrej > > We would need someone with relative expertise in this area to do this, > which I don't know if any core SymPy developers have. But perhaps one > of the GSoC students has it. > > Aaron Meurer > >> >>> >>> Best, >>> Nico >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sympy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/sympy. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/08ea23d0-1fb5-4bdb-a23f-de3f0337651c%40googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/sympy. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CADDwiVAxrxLR%2BjeMJTTUqZxMcHePaXRTKVqRBm4dpNTRgBET5A%40mail.gmail.com. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAKgW%3D6JW7qiQgbfFohRQZxd5Hyi4A7QyCA00a3Stcu_pMPzxfw%40mail.gmail.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CADDwiVC-bi2zd_A21paqJJcAySqn444ZatsBVopzTyzTkApE2g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
