[SciPy-Dev] Suggest addition to scipy.stats : Mann-Kendall test

[josef.pktd at gmail.com]

On Wed, Jul 27, 2016 at 8:23 AM, Schultz, Martin
<m.schultz at fz-juelich.de> wrote:
> Dear all,
>
>
>
>     discussion has apparently ceased on this topic. As I don’t see myself in
> a position to open the pull request for this and lead the implementation (I
> am too unexperienced with GitHub and don’t have the time to learn all the
> rules necessary to create a good scipy code), I am asking if someone would
> volunteer to take the lead. I will help where I can, but you don’t want me
> to be responsible for this.

You could also write test cases with and without ties and whatever
options are used for this function.
This would simplify the work for whoever is implementing this. Those
could just be added to a scipy issue.

I was thinking whether it's possible to just use the ranks `rankdata`
to simplify the calculations and remove some of the loops, but didn't
figure out whether that works.

(I'm busy with "models" and didn't plan to go back to "stats" until fall.)

Josef

>
>
>
> Thanks,
>
> Martin
>
>
>
>
>
> From: SciPy-Dev [mailto:scipy-dev-bounces at scipy.org] On Behalf Of Paul
> Hobson
> Sent: Wednesday, July 20, 2016 3:24 AM
> To: SciPy Developers List
> Subject: Re: [SciPy-Dev] Suggest addition to scipy.stats : Mann-Kendall test
>
>
>
>
>
>
>
> On Tue, Jul 19, 2016 at 1:04 AM, <josef.pktd at gmail.com> wrote:
>
> The function looks interesting, I've never heard of this hypothesis test.
>
>
>
>
>
> EPA guidance specifies that the Mann-Kendall test be used to determine if
> there's a trend (seasonal, or long-term) in pollutant concentrations.
>
>
>
> Even though regulators sometimes *require* that you use their ProUCL[0]
> software, this would be still be a very welcome addition to the stats module
> for environmental engineers like me.
>
>
>
> Martin: if you get the pull request started, I'll help your write the tests.
> Just @-mention me in the PR's discussion (@phobson).
>
>
>
> -Paul
>
> [0] https://www.epa.gov/land-research/proucl-software
>
>
>
> ------------------------------------------------------------------------------------------------
> ------------------------------------------------------------------------------------------------
> Forschungszentrum Juelich GmbH
> 52425 Juelich
> Sitz der Gesellschaft: Juelich
> Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
> Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
> Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
> Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
> Prof. Dr. Sebastian M. Schmidt
> ------------------------------------------------------------------------------------------------
> ------------------------------------------------------------------------------------------------
>
>
> _______________________________________________
> SciPy-Dev mailing list
> SciPy-Dev at scipy.org
> https://mail.scipy.org/mailman/listinfo/scipy-dev
>