Hi, On Thu, Jan 17, 2013 at 10:10 PM, Benjamin Root <ben.r...@ou.edu> wrote: > > > On Thu, Jan 17, 2013 at 5:04 PM, Eric Firing <efir...@hawaii.edu> wrote: >> >> On 2013/01/17 4:13 AM, Pierre Haessig wrote: >> > Hi, >> > >> > Le 14/01/2013 20:05, Benjamin Root a écrit : >> >> I do like the way you are thinking in terms of the broadcasting >> >> semantics, but I wonder if that is a bit awkward. What I mean is, if >> >> one were to use broadcasting semantics for creating an array, wouldn't >> >> one have just simply used broadcasting anyway? The point of >> >> broadcasting is to _avoid_ the creation of unneeded arrays. But maybe >> >> I can be convinced with some examples. >> > >> > I feel that one of the point of the discussion is : although a new (or >> > not so new...) function to create a filled array would be more elegant >> > than the existing pair of functions "np.zeros" and "np.ones", there are >> > maybe not so many usecases for filled arrays *other than zeros values*. >> > >> > I can remember having initialized a non-zero array *some months ago*. >> > For the anecdote it was a vector of discretized vehicule speed values >> > which I wanted to be initialized with a predefined mean speed value >> > prior to some optimization. In that usecase, I really didn't care about >> > the performance of this initialization step. >> > >> > So my overall feeling after this thread is >> > - *yes* a single dedicated fill/init/someverb function would give a >> > slightly better API, >> > - but *no* it's not important because np.empty and np.zeros covers 95 >> > % usecases ! >> >> I agree with your summary and conclusion. >> >> Eric >> > > Can we at least have a np.nans() and np.infs() functions? This should cover > an additional 4% of use-cases.
I'm a -0.5 on the new functions, just because they only save one line of code, and the use-case is fairly rare in my experience.. Cheers, Matthew _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion