Ühel kenal päeval, N, 2009-11-12 kell 18:16, kirjutas David Warde-Farley: > On 12-Nov-09, at 6:09 PM, josef.p...@gmail.com wrote: > > > On Thu, Nov 12, 2009 at 6:00 PM, Priit Laes <pl...@plaes.org> wrote: > >> Hey, > >> > >> I cooked up an initial implementation for one-dimensional > >> histogram_discrete(). > >> > >> Example: > >> > >>>> import numpy > >>>> numpy.histogram_discrete([-1, 9, 9, 0, 3, 5, 3]) > >> array([1, 1, 0, 0, 2, 0, 1, 0, 0, 0, 2]) > >>>> numpy.histogram_discrete([-99999, 99999]) > >> array([1, 0, 0, ..., 0, 0, 1]) > >> > >> Suggestions, criticism? :) > > > Is there a difference to numpy.bincount ?
Yes, it allows negative numbers to be in your list, otherwise it is almost identical to bincount. (except I stripped the weights option) > > Time to add to this to the FAQ (FWIW I've reinvented the wheel a > number of times too). Does anyone have a scenario where one would actually have both negative and positive numbers (integers) in the list? Of course, I really didn't know about bincount before I really started coding histogram_discrete() so maybe it would be nice to have an alias for it that calls bincount directly, so it would be easier to find? FAQ entry would be fine too, although I cannot find the FAQ itself from Numpy homepage. Also I spent some time on IRC (#scipy) complaining about my woes with histogram(), so please do not be that hard on me for reinventing a wheel... :P So, how about numpy.histogram_discrete() that returns data the way histogram() does: a list containing histogram values (ie counts) and list of sorted items from min(input)...max(input). ? Priit :) _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
