On Sunday, March 25, 2012 5:36:38 PM UTC+5:30, Stefan Krastanov wrote: > > > I will be using experimental lambdify for writing the backend for > > extending matplotlib backend and implementing svgfig backend. > > Will it be a problem? Because I think experimental_lambdify might change > a > > lot. > If you use > https://github.com/sympy/sympy/pull/673<https://github.com/sympy/sympy/pull/673>for > your work, you > will not have a choice as the code there depends on > experimental_lambdify. Using simply lambdify will not permit you to > plot a substantial part of the possible expressions as lambdify does > not support them. Anyway, experimental_lambdify is not public and the > docstring clearly explains that it is not ready for use outside the > plotting module. > > Moreover, I doubt that you will have to use it. The backends do not > use it directly - the matplotlib backend is mostly done and the svgfig > backend can just mimic it and nowhere in that part of the code one > uses experimental_lambdify directly. Of course there are many > potential bugs to be fixed there, but this is another problem. > > It would be more interesting to add another types of plots as > mentioned on the ideas page. This is the only reason you would have to > work on the matplotlib backend (besides bug fixes (the module is not > well tested so you will have many such fixes to do)). > I was thinking of adding implicit plots, surface/ contour plots, vector field plots etc. That would require me to use numpy for getting the points and I think I will have to use the experimental_lambdify.
> Finally, I am not a professional programmer and it may turn out that > the code I have written is an unsustainable mess :) (hopefully it is > not). Before starting work on it, you should really review it and > criticize strongly any drawbacks that you see, even if they are in the > basic architecture of the module. > Even I am not a professional programmer. I learnt programming mostly to solve algorithmic problems and implement most of the things I need in Electrical Engineering. I have gone through most of your code and it looks fine to me, though experimental_lambdify looks a more like a hack at certain places which you have acknowledged in the QnA and the comments.. I am in favor of using experimental_lambdify explicitly for plotting and nothing else. I think this will allow us to separate the plotting module from the main codebase. This I think will allow us to add more features to the plotting backend without having to worry about breaking the features of sympy. Though this will have lots of code duplication, I think it is justified by the ease with which we can add/ manipulate evaluation of series for plotting.This is just my opinion which might not agree with software programming practices. Thanks, Bharath M R -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/5bsHQeNh5L4J. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
