[SciPy-Dev] Improvement to regular grid interpolation

[Edouard Goudenhoofdt]

The pull request has been made.

On Mon, Sep 23, 2019 at 11:29 AM Edouard Goudenhoofdt <egouden at gmail.com>
wrote:

> Dear Simon,
>
> Thank you for your comment.
> For the sake of time I just kept the current implementation while saving
> weights.
> I guess it could later be used as a reference to benchmark your approach.
>
> Best regards,
>
> Edouard
>
> On Wed, Sep 18, 2019 at 3:45 PM Simon S. Clift <ssclift at gmail.com> wrote:
>
>> Hi Edouard,
>>
>> I'll keep an eye out for your pull request, or perhaps you could send me
>> a note on your use case to my gmail address.  My approach just consists of
>> saving the interpolation weights in a sparse matrix then doing a sparse
>> multiply for subsequent interpolations.  Weights can be either multi-linear
>> or using barycentric co-ordinates on regular grids; it's an arbitrary
>> choice unless you have a simplicial grid layout you prefer.
>>
>> Cheers
>> -- Simon
>>
>>
>> On Wed, Sep 18, 2019 at 8:50 AM Ralf Gommers <ralf.gommers at gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Wed, Sep 18, 2019 at 2:33 PM Edouard Goudenhoofdt <egouden at gmail.com>
>>> wrote:
>>>
>>>> This is clearly a duplicate of your previous post (How can I search the
>>>> mailing list?).
>>>>
>>>
>>> Yeah, good question .... that's kind of problematic at the moment.
>>> Eventually we'll switch to Mailman 3 which has a sane search interface.
>>> Sorry, we don't have a better answer than using Google et al. right now.
>>>
>>> I think this is a basic task for many geoscientists.
>>>> I did not make the effort to understand Simon Clift smarter approach.
>>>> But I already implemented a quick solution using a switch for the two
>>>> use cases.
>>>> May I submit a pull request?
>>>>
>>>
>>> It's now come up a couple of times, so clearly there's interest. Yes,
>>> opening a PR would be very helpful.
>>>
>>> Cheers,
>>> Ralf
>>>
>>>
>>>
>>>>
>>>>
>>>> On Wed, Sep 18, 2019 at 12:47 PM Dieter Werthmüller <
>>>> Dieter at werthmuller.org> wrote:
>>>>
>>>>> Edouard,
>>>>>
>>>>> I think this thread touched on that a bit:
>>>>> https://mail.python.org/pipermail/scipy-dev/2019-May/023540.html
>>>>>
>>>>> So Simon Clift might have already some functional code for that which
>>>>> could serve as a starting point.
>>>>>
>>>>> I personally would be certainly interested in the functionality.
>>>>>
>>>>> Dieter
>>>>>
>>>>>
>>>>> On 18/09/2019 11:50, Edouard Goudenhoofdt wrote:
>>>>> > Dear scipy developers,
>>>>> >
>>>>> > One could use /scipy.interpolate.RegularGridInterpolator/ at
>>>>> different
>>>>> > times with different values but the same source grid and target
>>>>> points.
>>>>> > Currently this would recompute the indices each time the function is
>>>>> called.
>>>>> > I would like to add the possibility to provide the target points at
>>>>> > initialisation and the values when calling the object.
>>>>> >
>>>>> > Best regards,
>>>>> >
>>>>> > Edouard Goudenhoofdt
>>>>> > //
>>>>> >
>>>>> > _______________________________________________
>>>>> > SciPy-Dev mailing list
>>>>> > SciPy-Dev at python.org
>>>>> > https://mail.python.org/mailman/listinfo/scipy-dev
>>>>> >
>>>>> _______________________________________________
>>>>> SciPy-Dev mailing list
>>>>> SciPy-Dev at python.org
>>>>> https://mail.python.org/mailman/listinfo/scipy-dev
>>>>>
>>>> _______________________________________________
>>>> SciPy-Dev mailing list
>>>> SciPy-Dev at python.org
>>>> https://mail.python.org/mailman/listinfo/scipy-dev
>>>>
>>> _______________________________________________
>>> SciPy-Dev mailing list
>>> SciPy-Dev at python.org
>>> https://mail.python.org/mailman/listinfo/scipy-dev
>>>
>>
>>
>> --
>> 1129 Ibbetson Lane
>> Mississauga, Ontario
>> L5C 1K9       Canada
>> _______________________________________________
>> SciPy-Dev mailing list
>> SciPy-Dev at python.org
>> https://mail.python.org/mailman/listinfo/scipy-dev
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/scipy-dev/attachments/20190923/e3511388/attachment.html>