File:Granny-knot-6-crossings.png: Difference between revisions

Single-closed-loop version of the "granny knot" of practical knot-tying. (The two-closed-loop version of the granny knot is L4a1.)

A version of this is seen on tenth-century stone cross at Nevern, western Wales.

Self-made, declared to be in public domain, generated from the following PostScript source code:

%!
150 515 translate 90 rotate/z{20000 sqrt}def
25 setlinewidth .92 .96 1 setrgbcolor
z 2 div 15000 sqrt 300 sub 100 360 330 arcn
0 -300 100 330 90 arcn 
z -300 100 90 210 arcn
z 2 div 15000 sqrt 300 sub 100 210 180 arcn
z 2 div 15000 sqrt neg 100 180 150 arcn
z 0 100 150 270 arcn 
0 0 100 270 30 arcn
z 2 div 15000 sqrt neg 100 30 0 arcn closepath
gsave 45 setlinewidth 0 setgray stroke grestore
stroke 45 setlinewidth 0 setgray
0 -300 100 329 271 arcn stroke
z -300 100 89 31 arcn stroke
z 2 div 15000 sqrt 300 sub 100 209 181 arcn stroke
0 0 100 269 181 arcn stroke
z 0 100 149 91 arcn stroke
z 2 div 15000 sqrt neg 100 29 1 arcn stroke
25 setlinewidth .92 .96 1 setrgbcolor
0 -300 100 330 270 arcn stroke
z -300 100 90 30 arcn stroke
z 2 div 15000 sqrt 300 sub 100 210 180 arcn stroke
0 0 100 270 180 arcn stroke
z 0 100 150 90 arcn stroke
z 2 div 15000 sqrt neg 100 30 0 arcn stroke
showpage
%EOF