[sage-devel] Re: possible bug with manifolds

[Eric Gourgoulhon]

I cannot reproduce the issue with Sage 9.1. Are you sure that you have a 
working install of Sage?

Le dimanche 27 septembre 2020 à 11:03:25 UTC+2, abhic...@gmail.com a écrit :

>
> I was following this 
> <https://nbviewer.jupyter.org/github/sagemanifolds/SageManifolds/blob/master/Notebooks/SM_vector_calc_change.ipynb>
>  
> tutorial, and ran into issues with set_default_chart
>
>  minimal example:
>
> E.<r,th,ph> = EuclideanSpace(coordinates='spherical')
> cartesian.<x,y,z> = E.cartesian_coordinates()
> E.set_default_chart(cartesian)
>
> error:
>
>
> /home/abhishek/Applications/SageMath/local/lib/python3.7/site-packages/sage/manifolds/chart.py
>  
> in __call__(self, point) 531 532 """ --> 533 return point.coord(self) 534 
> 535 def domain(self): AttributeError: 'RealDiffChart' object has no 
> attribute 'coord'
>
> version: 
> 𝚂𝚊𝚐𝚎𝙼𝚊𝚝𝚑𝚟𝚎𝚛𝚜𝚒𝚘𝚗𝟿.𝟷,𝚁𝚎𝚕𝚎𝚊𝚜𝚎𝙳𝚊𝚝𝚎:𝟸𝟶𝟸𝟶⎯𝟶𝟻⎯𝟸𝟶
> 64bit.
>

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