As I suggested on the StackOverflow question, you might try using the matrix expressions.
Aaron Meurer On Thu, Sep 5, 2013 at 2:53 PM, Stefan Krastanov <[email protected]>wrote: > Is there a reason not to use Symbols? From your explanations I do not see > one. If your issue is how to couple the result to something like numpy, > checkout `lambdify`. > > > On 5 September 2013 15:54, david <[email protected]> wrote: > >> For better explanation I have done the simplification in MatCad where >> unassigned variables are seen as symbols in sympy. >> >> >> <https://lh4.googleusercontent.com/-uq82CF7JYZw/UijhDNbjPvI/AAAAAAAAAAM/bPAnd8PQSpI/s1600/simplify+with++arrays.tiff> >> >> >> Am Donnerstag, 5. September 2013 15:19:14 UTC+2 schrieb david: >> >>> I have explored the sympy features and i was very impressed with both >>> the amount of features and the ease of testing with the doc and the coupled >>> Live Shell. >>> I want to write a programm that simplifies expressions as much as >>> possible to minimize calculation time because they will later be numericaly >>> evaluated very often. >>> The most features I need work very well. But with arrays I have a >>> problem. >>> I need to define an array object as an symbol, so that the following is >>> possible: >>> >>> simplify(2.0*2.0*t[0]) >>> is simplified to: >>> 4.0*t[0] >>> >>> and: >>> idx = 2 >>> simplify(2.0*2.0*t[idx]) >>> shold be simplified to: >>> 4.0*t[2] >>> >>> Is there any way to do this? >>> >>> david >>> >> -- >> 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 http://groups.google.com/group/sympy. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- > 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 http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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 http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
