Hi Hraban, Adding grouping makes sense: > > def Moire(expr size)(text densities)=
begingroup > save dn,a,b,k,labit,n,p,q,s,xs; > n := 32; > dn := 0; > for i := densities: > d[incr dn] := abs(i); > if i>1: labit[dn]:=1; fi > endfor > a := min(d[1],d[dn]); > b := max(d[1],d[dn]); > image( > for i=-n upto n: > draw (0,i*in/a)--(size,i*in/b); > %withpen pencircle scaled 3/5defaultthickness; > endfor > for i=1 upto dn: > k:=(a/d[i]-1)/(a/b-1); > if known labit[i]: > string s; s:=decimal(d[i]); xs:=0; > picture p,q; q := p := depthless(s); > if i=dn: > q := depthless(s & " lpi"); > xs := width(q)-width(p); > fi > label.top(q, (k*size+1/2xs, n*in/a+1.5mm)); > fi > draw (k*size, n*in/a+1.5mm)--(k*size, k[n*in/a,n*in/b]+.5mm); > draw (k*size, -n*in/a-1.5mm)--(k*size, -k[n*in/a,n*in/b]-.5mm); > endfor > ) endgroup > enddef; > draw Moire(57.5mm)(200, 175, 150, 125, 100, 75); > % ulshiftedto (142mm, 38.5mm); > \stopreusableMPgraphic As that at least makes it an expression instead of a statement list. But also depthless() is never defined? — Taco Hoekwater E: t...@bittext.nl genderfluid (all pronouns) ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________