examples/record1.lua

   1 local gr = require "graph"
   2
   3 --
   4 -- Define the graph
   5 --
   6 local g = gr.graph{"G",
   7   -- Need 'record' as shape attribute
   8   node = {shape = "record"},
   9   -- Classical graphviz record definition
  10   gr.node{"n1",
  11     label="<f0> left|<f1> mid\\ dle|<f2> right"};
  12   gr.node{"n2",
  13     label = "<f0> one|<f1> two"},
  14   gr.node{"n3",
  15     label = "hello\\nworld 1|{ b |{c|<here> d|e}|f}|<g> g|{h|z}"},
  16
  17   gr.edge{"n1:f2", "n2:f1"},
  18   gr.edge{"n1", "n3"},
  19   gr.edge{"n2:f0:n", "n3:here:sw"},
  20   gr.edge{"n1:f0", "n3:w"},
  21   -- Luayats record definition using vbox and hbox function
  22   gr.record{"n4",
  23     gr.hbox{
  24       "hello\\nworld 2",
  25       gr.vbox{
  26         "b",
  27         gr.hbox{"c", "<here> d", "e"},
  28         "f"
  29       },
  30       "<g> g",
  31       gr.vbox{"h", "z"}
  32     }
  33   },
  34   -- Same elements but starting top to down
  35   gr.record{"n5",
  36     gr.vbox{
  37       "hello\\nworld 3",
  38       gr.hbox{
  39         "b",
  40         gr.vbox{"c", "<here> d", "e"},
  41         "f"
  42       },
  43       "<g> g",
  44       gr.hbox{"h", "z"}
  45     }
  46   },
  47   -- Connect two ports
  48   gr.edge{"n4:here", "n5:e"}
  49 }
  50
  51 --
  52 -- Layout using 'dot' (default) engine
  53 --
  54 g:layout()
  55 g:write()
  56
  57 --
  58 -- Render into different formats
  59 --
  60 g:render("pdf", "out.pdf")
  61 g:render("gif", "out.gif")
  62 g:render("svg", "out.svg")
  63 g:render("jpg", "out.jpg")
  64 g:render("png", "out.png")
  65 g:show()
  66 --
  67 -- That's it
  68 --
  69 g:close()