[PyFeyn] bug!!!

[Andy Buckley]

Good idea, thanks!

On 26/01/16 14:22, Viesturs Veckalns wrote:
> Here you are.
> I prepared Feynman diagrams with PyFeyn, but I used Inkscape to draw colour flow lines on them (see attachment).
>
> I could propose drawing colour lines on top of Feynman diagrrams as an improvement for PyFeyn.
>
> Cheers,
> Viesturs
> ________________________________________
> From: Andy Buckley
> Sent: 22 January 2016 21:10
> To: Viesturs Veckalns; pyfeyn at projects.hepforge.org
> Subject: Re: [PyFeyn] bug!!!
>
> Hi Viesturs,
>
> Thanks again for the report -- we've added the missing tarball for
> PyFeyn 0.3.5 now, which should work for you.
>
> Best wishes,
> Andy, George & Georg
>
>
> On 15/01/16 22:28, Viesturs Veckalns wrote:
>> Dear colleagues!
>> I got all examples running (see my previous mail) by changing the source
>> file
>>
>> /usr/local/lib/python2.7/dist-packages/pyfeyn/deco.py
>>
>> in the following way:
>>
>> 1. In function getarrowpath I introduced argument constriction and
>> removed "self" in its implementation:
>>
>> def getarrowpath(arrowtopath, selfpos, var1, selfsize, var2,
>> constriction, constrictionlen):
>>           if pyxversion >= Version("0.12"):
>>               arrowpath = pyx.deco._arrowhead(arrowtopath, selfpos,
>>                                           1, selfsize, 45, constriction,
>>                                           constrictionlen)
>>           else:
>>               arrowpath = pyx.deco._arrowhead(arrowtopath, selfpos,
>>                                           1, selfsize, 45, constrictionlen)
>>           return arrowpath
>>
>> 2. In the implementation of Arrow::decorate I added self.constriction to
>> the arguments of getarrowpath
>> arrowpath = getarrowpath(arrowtopath, self.pos*dp.path.arclen(),
>>                                           1, self.size, 45,
>> self.constriction, constrictionlen)
>>
>> There was an apparent bug in the pyfeyn deco source code.
>>
>> Cheers,
>> Viesturs
>>
>>
>> _______________________________________________
>> PyFeyn mailing list
>> PyFeyn at projects.hepforge.org
>> https://www.hepforge.org/lists/listinfo/pyfeyn
>>
>
>
> --
> Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
> Particle Physics Expt Group, University of Glasgow
>


-- 
Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow