On Fri, Mar 18, 2011 at 9:42 AM, SherjilOzair <[email protected]> wrote: > Hi, > > 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.
Cool. > 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 ? If we are going to have a numpy-like object for sympy expressions, it should have the same exact API as numpy arrays (probably other than the dtype stuff). > 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. Again, unless there is a really strong reason to diverge from numpy I *highly* recommend simply copying the API to the extent that you implement it (we don't have to implement everything, but what we do implement, we should copy numpy...). > 5) Any more features ? I think more advanced indexing and broadcasting and then symbolic ufuncs would top my list... Cheers, Brian > Thanks, > Sherjil Ozair > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > 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. > > -- Brian E. Granger, Ph.D. Assistant Professor of Physics Cal Poly State University, San Luis Obispo [email protected] [email protected] -- You received this message because you are subscribed to the Google Groups "sympy" group. 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.
