Re: [LaTeX][PGF/TikZ] Undefined control sequence error for PGF intersections.

On Sat, 2024-08-31 at 18:14 +0000, Stefan Ram wrote:

Annada Behera <segfault@tilde.green> wrote or quoted:

% Mark intersection points and draw dashed lines
\foreach \n in {1,...,\t} {

. . .

What is undefined?

 
  Looks like "\t" is on the fritz or not pulling its weight,
  since the loop seems to be cruising when we swap "\t" for "4":
 
\foreach \n in {1,...,4} {
 
  . That error message was probably about as clear as LA smog.

In this line, \t is definitely "pulling its weight,"

    \fill[name intersections={of=line and sine, name=i, total=\t}, black]
        \foreach \s in {1,...,\t} {(i-\s) circle (2pt)};

It's just looks like \t's scope is limited to the commands where it is defined.
Don't know whether this is expected behavior or a bug.