Yes. Check out

https://www.gnu.org/licenses/license-list.en.html#GPLCompatibleLicenses

and also note that CC-BY is not recommended as a software license (by CC 
themselves). As there is one-way compatibility, it should be possible to 
clarify the situation by putting your derivative work under the GPL.

Although not legally required, it would probably be good manners to inform the 
original authors.

-pd

> On 18 Sep 2019, at 14:20 , Raphael Bonnet <raphael.bon...@univ-cotedazur.fr> 
> wrote:
> 
> Thank you Peter for your response,
> 
> It looks ok for the license. The journal's content appears to be under this 
> license:
> https://creativecommons.org/licenses/by/3.0/
> 
> Raphael
> 
> Le 18/09/2019 à 14:11, peter dalgaard a écrit :
>> Not a lawyer, but...
>> 
>> I would expect that it depends on what license it was published under 
>> originally. If it doesn't explicitly allow the creation of derivative works, 
>> then I would be wary.
>> 
>> -pd
>> 
>>> On 18 Sep 2019, at 13:59 , Raphael Bonnet 
>>> <raphael.bon...@univ-cotedazur.fr> wrote:
>>> 
>>> Hi everyone,
>>> 
>>> I just rewrote a bit of Matlab code into R and that I would like to make it 
>>> available for the community.
>>> Unfortunately this bit of code has been published by authors that I've 
>>> never contacted.
>>> 
>>> I was wondering if I could submit a package to CRAN by keeping the same 
>>> license as the journal in which the code was published and citing the paper 
>>> and the authors.
>>> Can I associate myself as [cre, trl] in the description file?
>>> 
>>> Thanks,
>>> Raphael
>>> 
>>> ______________________________________________
>>> R-package-devel@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-package-devel
> 

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk  Priv: pda...@gmail.com

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