On 05-Jan-15 1:56 PM, Davidid wrote: > On 5 January 2015 at 20:40, Colin J. Williams <cjwilliam...@gmail.com> > wrote: > >> This illustrates a failure, which is reported later in the calculation: >> >> A2= np.matrix([[1, 2, -2], [-3, -1, 4], [4, 2 -6]]) >> >> Here 2 - 6 is treated as an expression. >> > There should be a comma between 2 and -6. The rectangularity is checked, > and in this case, it is not fulfilled. As such, NumPy creates a square > matrix of size 1x1 of dtype object. > > If you want to make sure what you have manually inputed is correct, you > should include a couple of assertions afterwards. > > /David. David,
Thanks. My suggestion was that numpy should do that checking, Colin W. > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion