Jake,
Thanks for the clarification. I will try to get the permissions from the
authors.
What is regarded as sufficient? Is an email from the author, granting
me/SciPy to distribute their code with a specific, BSD-style license
sufficient? Or do they necessarily have to change the websites where
they host the code to include the license?
Dieter
On 07/10/16 14:16, Jacob Vanderplas wrote:
> Hi,
> Unfortunately I don't think those notes are particularly helpful in this
> regard: for example, does bundling the software with SciPy meet the
> requirement of "distributing the ORIGINAL package", or not? It's murky,
> and most of the devs would likely err on the side of safety and assume
> the answer is no. The benefit of using an established license like BSD,
> MIT, GPL, etc. is that the language is well-defined and the intent of
> the license is well-understood.
> Jake
>
> Jake VanderPlas
> Senior Data Science Fellow
> Director of Research in Physical Sciences
> University of Washington eScience Institute
>
> On Fri, Oct 7, 2016 at 11:24 AM, Dieter Werthmüller
> <mailto:dieter@werthmuller.org <mailto:dieter@werthmuller.org> <dieter@werthmuller.org <mailto:dieter@werthmuller.org>> wrote:
>
> Jake,
>
> Thanks for your reply.
>
> Have you seen my whole section on "Files and Licences/Permissions"? (I
> put that info at the end of my original message, after my name.) Do you
> think it is not enough if Hamilton gave his written permission to 'use
> fftlog in any way you choose'?
>
> Dieter
>
>
> On 07/10/16 12:53, Jacob Vanderplas wrote:
> > Hi Dieter,
> > That's very cool! Before discussion of whether this fits into SciPy,
> > there's one issue: I don't see any license on the Fortran code. This
> > means, unfortunately, that it defaults to some form of
> > "all-rights-reserved" and cannot be used in SciPy.
> >
> > Often it's enough to email the package author, link to some information
> > like my post at [1], and request that they add a BSD-style license to
> > their code (note that a GPL-style license would make it unusable by SciPy).
> >
> > Though we may want to see what others think about including this in
> > SciPy before going too far down that route. For what it's worth, I'd
> > suggest starting by making sure your Python wrapper is well-documented &
> > well-tested; if it proves useful to many people, it would then be quite
> > easy to pull into SciPy.
> >
> > Jake
> >
> > [1] http://www.astrobetter.com/blog/2014/03/10/the-whys-and- hows-of-licensing-scientific- code/
> <http://www.astrobetter.com/blog/2014/03/10/the-whys-and- >hows-of-licensing-scientific- code/
> >
> > Jake VanderPlas
> > Senior Data Science Fellow
> > Director of Research in Physical Sciences
> > University of Washington eScience Institute
> >
> > On Thu, Oct 6, 2016 at 7:20 PM, Dieter Werthmüller
> > <dieter@werthmuller.org <mailto:dieter@werthmuller.org>
>>> wrote: > <https://github.com/prisae/
> >
> > Dear SciPy-devs,
> >
> > I recently had the need for a logarithmic FFT routine, and did a
> > quick f2py around Andrew Hamilton's FFTLog:
> > http://casa.colorado.edu/~ajsh/FFTLog
> <http://casa.colorado.edu/~ajsh/FFTLog >
> > <http://casa.colorado.edu/~ajsh/FFTLog
> <http://casa.colorado.edu/~ajsh/FFTLog >>
> >
> > I put my f2py-setup and my pyf-file up on GitHub:
> > https://github.com/prisae/fftlog
fftlog > <https://github.com/prisae/fftlog
> > <http://momonga.t.u-tokyo.ac.> <https://github.com/prisae/fftlog >>
> >
> > I thought it might be a useful addition to the SciPy FFTPack.
> > Specifically as three out of the five fortran-files, of which
> FFTLog
> > consists, are already in scipy/fftpack.
> >
> > I have never contributed to SciPy and therefore do not know
> how much
> > work it would involve to get it into SciPy. However, I thought I
> > ask. If there is interest I expect that it would not take long for
> > an experienced person, as it is a fairly small addition. Or
> someone
> > could point me to the right direction on what to do to get it in.
> >
> >
> > I append some comments on the involved files of FFTLog and some
> > comments regarding their licenses. I believe it is compatible with
> > SciPy.
> >
> > Thanks for all your good work!
> > Dieter
> >
> >
> > Files and Licenses/Permissions
> > ------------------------------
> >
> > Files of FFTLog
> >
> > [1] cdgamma.f
> > [2] drfftb.f
> > [3] drfftf.f
> > [4] drffti.f
> > [5] fftlog.f
> >
> > (plus a test routine, fftlogtest.f)
> >
> > -- [1] --
> > The original FFTLog states about this file:
> >
> > FFTLog uses [...] and a modified version of the complex Gamma
> > function from the gamerf package at
> > momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html
> <http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html >
jp/~ooura/gamerf.html
> <http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html >>. The original
> > gamerf copyright statement states:
> >
> > Copyright(C) 1996 Takuya OOURA (email: ooura@mmm.t.u-tokyo.ac.jp <mailto:ooura@mmm.t.u-tokyo.ac.jp >
> > <mailto:ooura@mmm.t.u-tokyo.ac.jp
> <mailto:ooura@mmm.t.u-tokyo.ac.jp >>).
> > You may use, copy, modify this code for any purpose and
> > without fee. You may distribute this ORIGINAL package.
> >
> > Permission to distribute the modified gamma function code with the
> > FFTLog package has been granted (email from Takuya Ooura to Andrew
> > Hamilton dated 16 March 1999).
> >
> > Hence I think it is compatible with SciPy, or am I wrong?
> >
> > Alternatively it could be replaced with scipy.special.loggamma, I
> > think, but I do not know if it is possible to mix Fortran and Python
> > code with f2py.
> >
> > -- [2], [3], [4] --
> > They are from the NCAR suite of FFT routines (Swarztrauber 1979).
> >
> > As far as I can see they are already in SciPy, in
> > scipy/fftpack/src/dfftpack/ (dfftb.f, dfftf.f, and dffti.f).
> >
> > So there is definitely not a licensing problem here.
> >
> > -- [5] --
> > This is the actual FFTLog routine from Hamilton.
> >
> > I asked Hamilton for permission before publishing his source code at
> > github.com/prisae/fftlog <http://github.com/prisae/fftlog >
> <http://github.com/prisae/fftlog <http://github.com/prisae/fftlog >>.
> >
> > His email response was:
> >
> > -- start email from 28/09/2016 --
> > Dieter,
> >
> > You are welcome to use fftlog in any way you choose. Please note the
> > credits commented in the code:
> >
> > c FFTLog uses the NCAR suite of FFT routines,
> > c and a modified version of the complex Gamma function
> > c from the gamerf package at
> > c http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html
> <http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html >
> > <http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html
> <http://momonga.t.u-tokyo.ac.jp/~ooura/gamerf.html >> .
> > c The original gamerf copyright statement states:
> > c Copyright(C) 1996 Takuya OOURA (email:
> > ooura@mmm.t.u-tokyo.ac.jp <mailto:ooura@mmm.t.u-tokyo.ac.jp >
> <mailto:ooura@mmm.t.u-tokyo.ac.jp <mailto:ooura@mmm.t.u-tokyo.ac.jp >>).
> > c You may use, copy, modify this code for any purpose and
> > c without fee. You may distribute this ORIGINAL package.
> > c
> > c Permission to distribute the modified gamma function code
> > c with the FFTLog package has been granted
> > c (email from Takuya Ooura to Andrew Hamilton dated 16 March 1999).
> >
> > Andrew
> > -- end email from 28/09/2016 --
> >
> > _______________________________________________ > <mailto:SciPy-Dev@scipy.org <mailto:SciPy-Dev@scipy.org>>
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