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

On Fri, 26 Apr 2024, Taco Hoekwater wrote:

...

On 25 Apr 2024, at 23:12, Fabrice Couvreur 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