Re: Initial kw behaviour for cumulative_trapezoid

Thanks Ralf,
As you noted, the only current logical uses for initial are initial=None and initial=0. The numerical values for these would be the same if we prepend and sum. Prepending and summing would also make all other values for `initial` correct and usable as well.

But, I would be good with what you suggested as well: only provide the options for 0 and None. 
This would explicitly make the purpose of the `initial` kw to match the lengths of the input and output.

Would raising an exception be too strong of a change though? 
What about: 
if `initial` is not None: initial is taken as 0.
A warning can then be provided if initial is not 0 or None to ensure it is not a silent change.

I can put up a PR based on whatever is the final consensus and make cumulative_simpson have the same behaviour.
_______________________________________________
SciPy-Dev mailing list -- [email protected]
To unsubscribe send an email to [email protected]
https://mail.python.org/mailman3/lists/scipy-dev.python.org/
Member address: [email protected]