[Numpy-discussion] Would a patch with a function for incrementing an array with advanced indexing be accepted?
travis at continuum.io
Tue Jun 26 15:10:50 EDT 2012
On Jun 26, 2012, at 1:34 PM, Frédéric Bastien wrote:
> I think he was referring that making NUMPY_ARRAY_OBJECT[...] syntax
> support the operation that you said is hard. But having a separate
> function do it is less complicated as you said.
Yes. That's precisely what I meant. Thank you for clarifying.
> On Tue, Jun 26, 2012 at 1:27 PM, John Salvatier
> <jsalvati at u.washington.edu> wrote:
>> Can you clarify why it would be super hard? I just reused the code for
>> advanced indexing (a modification of PyArray_SetMap). Am I missing something
>> On Tue, Jun 26, 2012 at 9:57 AM, Travis Oliphant <travis at continuum.io>
>>> On Jun 26, 2012, at 11:46 AM, John Salvatier wrote:
>>> If you increment an array using advanced indexing and have repeated
>>> indexes, the array doesn't get repeatedly
>>> incremented, http://comments.gmane.org/gmane.comp.python.numeric.general/50291.
>>> I wrote a C function that does incrementing with repeated indexes correctly.
>>> The branch is here (https://github.com/jsalvatier/numpy see the last two
>>> commits). Would a patch with a cleaned up version of a function like this be
>>> accepted into numpy? I'm not experienced writing numpy C code so I'm sure it
>>> still needs improvement.
>>> This is great. It is an often-requested feature. It's *very difficult*
>>> to do without changing fundamentally what NumPy is. But, yes this would be
>>> a great pull request.
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