Happens to me all the time...
On Sat, Apr 16, 2011 at 8:51 PM, Forrest Sheng Bao <forrest....@gmail.com> wrote: > Oh yeah, my bad. Forget about it. I guess I was too tired. > > Cheers, Forrest > > On Sat, Apr 16, 2011 at 10:47 PM, Nathaniel Smith <n...@pobox.com> wrote: >> >> On Sat, Apr 16, 2011 at 8:39 PM, Forrest Sheng Bao >> <forrest....@gmail.com> wrote: >> >>>> a=zeros((3,3)) + eye(3) >> >>>> a*a >> > array([[ 1., 0., 0.], >> > [ 0., 1., 0.], >> > [ 0., 0., 1.]]) >> > >> > Then i assigned a value to one of the element: >> > >> >>>> a[1,2]=4 >> > >> > Finally, the '*' operator was interpreted as a matrix multiplication >> > >> >>>> a*a >> > array([[ 1., 0., 0.], >> > [ 0., 1., 16.], >> > [ 0., 0., 1.]]) >> >> That looks like element-wise multiplication to me? (Matrix >> multiplication would have given you an 8 where you have a 16.) >> >> -- Nathaniel > > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
