On Tue, Jun 17, 2008 at 10:41 AM, Pearu Peterson <[EMAIL PROTECTED]> wrote: > > > > On Jun 17, 8:29 am, goric <[EMAIL PROTECTED]> wrote: >> Hello, >> I need some methods that permit to add a line or a column in a matrix >> in that way: >> >> M = Matrix(3,3,lambda i,j: i+j) >> M >> ⎡0 1 2⎤ >> ⎢1 2 3⎥ >> ⎣2 3 4⎦ >> V = Matrix(3,1,lambda i,j: 3+i+j) >> V >> ⎡3⎤ >> ⎢4⎥ >> ⎣5⎦ >> M.append_col(V) >> M >> ⎡0 1 2 3⎤ >> ⎢1 2 3 4⎥ >> ⎣2 3 4 5⎦ >> VL = [3,4,5,6] >> M.append_line(VL) >> M >> ⎡0 1 2 3⎤ >> ⎢1 2 3 4⎥ >> ⎢2 3 4 5⎥ >> ⎣3 4 5 6⎦ >> >> Can I implement them? The names I gave to them are good or do you >> suggest any other name? I'll wait your opinion to start working. > > I'd suggest using names: > insert_row, insert_column, append_row, append_column > > where insert_row(index, row) etc. > > Another option is to have something similar to numpy > > insert(index, seq, axis=None) > append(seq, axis=None) > > See numpy.insert and numpy.append functions for more info.
Thta's ok with me too. We can even have both. Ondrej --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
