[metapost] Automatic labeling

[Peng Yu]

Hi,

Suppose I have 100 vertexes, I want to label all of them with the vertex index.

I'm wondering if it is possible to do it with a for loop in metapost.

pair v[];
v1 := ...;
v2 := ...
...
v100 = ...;

label(btex $1$ etex, v1);
label(btex $2$ etex, v2);
...
label(btex $100$ etex, v100);

Thanks,
Peng