Le dimanche 19 mai 2019 10:48:23 UTC+2, Volker Braun a écrit :
>
>
> In general, I would lean more on the side of reasonable defaults (e.g. why
> is %display typeset not the default in the notebook, its easier for power
> users to turn it off than for novices to turn it on) than a proliferation
> of more display-related methods.
>
>
A big +1 to this.
LaTeX is arguably the best way to display mathematics and one may wonder
why "%display latex" is not the default in the Jupyter notebook. If one
would like the plain text view of an object X instead, one can use print(X).
So, in the Jupyter notebook, instead of having (as of today)
X.show() --> LaTeX typeset
X --> plain text
we could have
X --> LaTeX typeset
print(X) --> plain text
By the way, a proper way to implement this could be to simply add the
following method to SageObject:
def _repr_latex_(self):
return '$' + str(latex(self)) + '$'
Then the LaTeX display is taken in charge by the *native* Jupyter rich
output mechanism (there is no need of "%display latex", which is a magic
implemented at the Sage level) . Moreover, this would fix the long standing
issue of pdf export reported in
https://trac.sagemath.org/ticket/23330
I've discussed this point with Fernando Perez at the CIRM meeting in
February and he recommends that we use Jupyter's _repr_latex_. See
https://github.com/ipython/ipython-in-depth/blob/master/examples/IPython%20Kernel/Custom%20Display%20Logic.ipynb
for more details on customizing Jupyter rich output.
Eric.
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