On Saturday, January 11, 2014 7:26:51 PM UTC+1, Comer wrote: > > > I do have another question or two... > > I see the .data method. What is really needed is the ability to create > data arrays constructed from symbols, indeed functions of various local > coordinates. So far I have only seen numerical entries in the data... Can > one put instead something like what symarray provides in place of the > Minkowski metric? > > Yes, of course. I just notice there's no symbolic example in the docstrings. Take a look at this test:
https://github.com/sympy/sympy/blob/master/sympy/tensor/tests/test_tensor.py#L1235 This is a 4-momentum-like assignment of sympy Symbols. Nested lists or a generating function are accepted. I don't remember if it also accepts a numpy ndarray, if it doesn't, that' a bug. -- 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 sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
