Re: Deprecate `scipy.integrate.romberg`/`scipy.integrate.quadrature`?

On Mon, Nov 27, 2023 at 11:42 PM Matt Haberland <[email protected]>
wrote:

> Hi team,
>
> Thanks for the feedback on deprecating these functions. There was support
> for deprecating them, but also some concerns, so the plan has changed to
> the following:
>
>    - Deprecate `scipy.integrate.quadrature` (so we can reclaim the name
>    for a more general-purpose function in the future).
>
>
This is something we try to never do. There are very few examples of us
deprecating and then removing a name, and then reintroducing it with
different behavior. There has to be an exceptionally good reason to do so,
and I don't see one in the PR discussion (it's quite long, so I may have
missed it). I can't even think of a potential reason, because the
`quadrature` name isn't special enough that you can't pick a different name
for whatever you want/need here.

Cheers,
Ralf


>    - Introduce `scipy.integrate.gauss_quad` as an alias for
>    `scipy.integrate.quadrature`, and point users to `gauss_quad` in the
>    `quadrature` deprecation messages.
>    - Mark  `scipy.integrate.gauss_quad` and  `scipy.integrate.romberg` as
>    legacy functions.
>
> We welcome additional feedback in gh-19510 (
> https://github.com/scipy/scipy/pull/19510).
> Thanks,
> Matt
>
> On Sat, Nov 11, 2023 at 4:10 PM Matt Haberland <[email protected]>
> wrote:
>
>> Hi Team,
>>
>> `scipy.integrate.romberg` and `scipy.integrate.quadrature` do not
>> reliably hit their target accuracies, and when they do, they typically
>> require more function evaluations and take more wall clock time than
>> `scipy.integrate.quad` (all with default settings). This is documented in
>> https://github.com/scipy/scipy/issues/18574#issuecomment-1703320598,
>> which compares the accuracies, function call counts, and wall clock times
>> on a benchmark set of ~800 integrals with known analytical solutions.
>>
>> gh-19510 (https://github.com/scipy/scipy/pull/19510) proposes to
>> deprecate these functions, suggesting `scipy.integrate.quad` as a drop-in
>> replacement. Please let us know your thoughts either here or in gh-19510!
>>
>> Thanks,
>> Matt
>>
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