Circular Heawood

Engine: circo
Command, both sides: dot -Kcirco -Tsvg input.gv
Input: graphviz-16.1.0/graphs/undirected/Heawood.gv · 790 bytes
Features: biconnected blocks
Result: identical on macOSidentical under portable math

Comparing…

graphviz-pure, native macOS build output, magenta plate

Magenta plate100%

C onlyport onlyboth: in register

Input

/*
 * The transitive 6-net, also known as Heawood's graph,
 * can be used to test the "stability points" of the layout
 * algorithm.

 * The "ideal" layout occurs when len="2.5". The layout
 * loses the regularity when smaller values are used.
 */
graph "Heawood" {
  node [
    fontname = "Arial"
    label = "\N"
    shape = "circle"
    width = "0.50000"
    height = "0.500000"
    color = "black"
  ]
  edge [
    color = "black"
  ]
  /* The outer wheel */
  "0" -- "1" -- "2" -- "3" -- "4" -- "5" -- "6" -- "7" -- "8" -- "9" -- "10" -- "11" -- "12" -- "13" -- "0";
  /* The internal edges. The len = makes them internal */
  "0" -- "5" [len = 2.5];
  "2" -- "7" [len = 2.5];
  "4" -- "9" [len = 2.5];
  "6" -- "11" [len = 2.5];
  "8" -- "13" [len = 2.5];
  "10" -- "1" [len = 2.5];
  "12" -- "3" [len = 2.5];
}

Files

File	Bytes	SHA-256
input.gv	790
c.svg C	8,051	bba3ea67c96f2bb09ba206913c10fd00a2e1e3284b9a148d68f73b83dfcbe055
rust.svg Rust	8,062	982f00e66765c50a6403bea01a49417124b2481dc9af988f154483309ec6696f

The two hashes differ even when the outputs are identical, because each file keeps its own generator comment. Made by scripts/site-samples.sh.