On Fri, Mar 18, 2011 at 17:04, Aaron S. Meurer <asmeu...@gmail.com> wrote: > > On Mar 18, 2011, at 11:53 AM, Alexey U. Gudchenko wrote: > >> >> 18.03.2011 19:42, SherjilOzair пишет: >> > Hi, >> >> Good evening. >> >> > I'm working on a small base implementation of numpy-style array for >> > sympy. >> > Currently I've added component-wise addition, subtraction, >> > multiplication, mult by integer. I've uploaded the code on GitHub. >> >> Where is it? >> >>> >>> Here are some points of discussion. >>> >>> 1) If unequal-sized arrays are added, should an error be raised or >>> should they still be force-added taking the missing elements as zero ? >>> 2) Multiplication of two linear arrays should give another linear >>> array, with component-wise multiplication ? Or an array of 2-tuples, >>> like one does with Sets ? >>> 3) If using component-wise multiplication, for unequal arrays, should >>> the missing elements be taken as one ? Or should an error be raised ? >>> 4) Power will be done component-wise ? But this depends on the answer >>> to point 2. >>> 5) Any more features ? >>> >>> Thanks, >>> Sherjil Ozair >>> >> Sorry, I can entangle you, but: >> >> May be it would be helpful for answering of your questions if the aims of >> 'numpy-style array' would be more clear (for me at least, I can't find >> issues, aims or description of 'numpy-style array'). > > The purpose is to implement a basic version of numpy in sympy so that you do > not have to install numpy to use the basic array feature. Since numpy has to > be compiled, this will be very useful, since, for example, you can't install > it on the Google App Engine. Therefore, the implementation in SymPy should > match the numpy implementation.
That's not very informative. numpy ndarrays have a *lot* of functionality attached to them. It's a major project, beyond the capabilities and resources of a single GSoC student, to match *all* of their functionality. You need to clearly state exactly what features of numpy ndarrays you want duplicated. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
