[SciPy-Dev] Code review for trapz update

[Sturla Molden]

Eric Moore <ewm at redtetrahedron.org> wrote:

>> This issue arises, for example, in the conversion of spectral quantities
>> from wavenumber (units of inverse length) to wavelength (units of
>> length).  When the spectral quantity is inverted, a monotonically
>> increasing sequence becomes a monotonically decreasing sequence, and
>> vice versa.  This gives the unexpected result that trapz(<quantity>,
>> <spectrum>) works as expected before conversion, but returns values with
>> the wrong sign after conversion.
> 
>  I understand why this seems wrong, but the fact that you have to reverse
> the order is actually correct.

Yes.


Sturla