[NTG-context] Re: The graph is not visible.

[Fabrice Couvreur <fabrice1.couvreur@gmail.com>]

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Hi,
Thanks for your help. I did several tests playing only with the code of
component 5 which interferes with that of component 14.

@Aditya
begingroup;
.....
endgroup;
does not work.

@Hans
save defaultfont, defaultscale;

maybe also:

save circle, p, q, b ;

I get an empty rectangle in place of the graph in composant 5.

@Taco
The solution that works is to add component 14 to the code

numeric a, b;

Fabrice


Le ven. 26 avr. 2024 à 10:45, Aditya Mahajan <adityam@umich.edu> a écrit :

> On Fri, 26 Apr 2024, Taco Hoekwater wrote:
>
> >
> >
> > > On 25 Apr 2024, at 23:12, Fabrice Couvreur <
> fabrice1.couvreur@gmail.com> wrote:
> > >
> > > Hi,
> > > Here is the code that interferes with the graph from the last chapter
> but why ?
> >
> > Because of this “path b”:
> >
> > >              path circle, p, q, b;
> >
> > which interferes with the assignment line from the other graphic code:
> >
> > >              b := xpart(reverse C_f intersectionpoint reverse C_g);
> >
> > because there “b” is a now a path, not a numeric.
> >
> > Adding
> >
> >    numeric a,b;
> >
> > fixes the problem in chapter 14.
>
> Woundn't newnumeric be better?
>
> There are very few instances where I want variables defined in one block
> to be reused in another block. So, I almost always use
>
> \startMPcode
> begingroup;
> ....
> endgroup;
> \stopMPcode
>
> to avoid such issues.
>
>
> Aditya___________________________________________________________________________________
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