[SciPy-Dev] Differentiate function

[Robert Rehammar]

Dear Pierre,

Thank you for your reply. I am note fully aware of the difference 
between numpy and scipy and also not a developer, but it seems to me 
this function could fit in scipy where you often will want to 
differentiate w.r.t. a particular variable. I am aware of diff, but it 
is really a much more basic function. In many areas of science and 
engineering is the sampling points of crucial importance, and having a 
function giving you the appropriate sampling points can be very 
important for accuracy.

I have been missing this function several times my self, and hence the 
reason why I submitted it here. Anyway, if there is no interest, I will 
of course not peruse the matter further.

Best,

Robert


On 2016-11-05 22:53, Pierre de Buyl wrote:
> Dear Robert,
>
> On Thu, Nov 03, 2016 at 08:37:07PM +0100, Robert Rehammar wrote:
>> Dear all,
>>
>> I implemented a simple function to differentiate an array which seems other
>> people might like to have. It looks like:
>> def diff(f, x, retval = 'same'):
>> (...)
>>
>> What do you think about adding it to scipy?
> I am not a SciPy developer myself but I thought that I would point out NumPy's
> diff function. It does not go as far as your routine in terms of options but
> goes most of the way. It applies the differentiation to order 'n' as an option
> that is similar to the recursive application. Given this existing routine, the
> incentive to add another one might be low.
>
> Regards,
>
> Pierre
>
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