[Numpy-discussion] Proposal for new ufunc functionality

Robert Kern robert.kern@gmail....
Tue Apr 13 15:34:38 CDT 2010


On Sat, Apr 10, 2010 at 17:59, Robert Kern <robert.kern@gmail.com> wrote:
> On Sat, Apr 10, 2010 at 12:45, Pauli Virtanen <pav@iki.fi> wrote:
>> la, 2010-04-10 kello 12:23 -0500, Travis Oliphant kirjoitti:
>> [clip]
>>> Here are my suggested additions to NumPy:
>>> ufunc methods:
>> [clip]
>>>       * reducein (array, indices, axis=0)
>>>                similar to reduce-at, but the indices provide both the
>>> start and end points (rather than being fence-posts like reduceat).
>>
>> Is the `reducein` important to have, as compared to `reduceat`?
>
> Yes, I think so. If there are some areas you want to ignore, that's
> difficult to do with reduceat().

And conversely overlapping areas are highly useful but completely
impossible to do with reduceat.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco


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