doc/TikzGraphs.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# TikzGraphs"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This library uses the LaTeX package [pgf/tikz](http://www.ctan.org/pkg/pgf) to produce graphs. It outputs SVG images to the notebook."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Installation"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "using Pkg\n",
    "Pkg.add(\"TikzGraphs\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In addition, you will need to install the following dependencies if you do not already have them on your system.\n",
    "* Pdf2svg. This is required by TikzPictures. On Ubuntu, you can get this by running `sudo apt-get install pdf2svg`. On Windows, you can download the binaries from http://www.cityinthesky.co.uk/opensource/pdf2svg/. Be sure to add pdf2svg to your path (and restart).\n",
    "* Pgf (version 3.0 or later). Install using your latex package manager (e.g., texlive or miktex).\n",
    "\n",
    "Once these things are installed, you should be able to run the following:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "using TikzGraphs"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Examples"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPictures.TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n2 -> [,] 3;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "using TikzGraphs\n",
    "using Graphs\n",
    "g = DiGraph(4)\n",
    "add_edge!(g, 1, 2)\n",
    "add_edge!(g, 2, 3)\n",
    "TikzGraphs.plot(g)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",
       "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"39.969pt\" height=\"98.37pt\" viewBox=\"0 0 39.969 98.37\" version=\"1.1\">\n",
       "<defs>\n",
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       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPictures.TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "add_edge!(g, 3, 4)\n",
    "add_edge!(g, 1, 4)\n",
    "TikzGraphs.plot(g)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can save your graphs to PDF, SVG, and TEX."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "t = TikzGraphs.plot(g)\n",
    "using TikzPictures # this is required for saving\n",
    "TikzPictures.save(PDF(\"graph\"), t)\n",
    "TikzPictures.save(SVG(\"graph\"), t)\n",
    "TikzPictures.save(TEX(\"graph\"), t)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Labels"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can also specify the node labels."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/svg+xml": [
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",
       "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"42.39pt\" height=\"98.649pt\" viewBox=\"0 0 42.39 98.649\" version=\"1.1\">\n",
       "<defs>\n",
       "<g>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547002-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547002-0-1\">\n",
       "<path style=\"stroke:none;\" d=\"M 7.34375 -0.125 L 7.34375 -0.578125 L 6.96875 -0.578125 C 6.375 -0.578125 6.4375 -0.515625 6.3125 -0.84375 L 4.171875 -7.0625 C 4.109375 -7.203125 3.890625 -7.40625 3.734375 -7.40625 C 3.578125 -7.40625 3.34375 -7.203125 3.296875 -7.0625 L 1.234375 -1.109375 C 1.0625 -0.59375 0.859375 -0.59375 0.125 -0.578125 L 0.125 0.015625 L 1.328125 -0.03125 L 2.6875 0.015625 L 2.6875 -0.578125 C 1.984375 -0.578125 1.9375 -0.6875 1.9375 -0.953125 C 1.9375 -0.984375 1.890625 -0.984375 1.96875 -1.171875 L 2.359375 -2.265625 L 4.515625 -2.265625 L 5 -0.875 C 5.015625 -0.84375 5.03125 -0.78125 5.03125 -0.734375 C 5.03125 -0.4375 4.671875 -0.578125 4.203125 -0.578125 L 4.203125 0.015625 C 4.765625 -0.03125 5.46875 -0.03125 5.84375 -0.03125 L 7.34375 0.015625 Z M 4.5625 -2.84375 L 2.5625 -2.84375 L 3.640625 -5.953125 L 3.234375 -5.953125 L 4.3125 -2.84375 Z M 4.5625 -2.84375 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547002-0-2\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.6875 -1.953125 C 6.6875 -2.828125 5.671875 -3.703125 4.5625 -3.828125 L 4.5625 -3.5625 C 5.53125 -3.75 6.421875 -4.515625 6.421875 -5.25 C 6.421875 -6.125 5.296875 -7.078125 4 -7.078125 L 0.15625 -7.078125 L 0.15625 -6.5 L 0.59375 -6.5 C 1.359375 -6.5 1.1875 -6.515625 1.1875 -6.15625 L 1.1875 -0.90625 C 1.1875 -0.546875 1.359375 -0.578125 0.59375 -0.578125 L 0.15625 -0.578125 L 0.15625 0 L 4.265625 0 C 5.59375 0 6.6875 -1.015625 6.6875 -1.953125 Z M 5.046875 -5.25 C 5.046875 -4.609375 4.765625 -3.921875 3.65625 -3.921875 L 2.40625 -3.921875 L 2.40625 -6.234375 C 2.40625 -6.5625 2.234375 -6.5 2.703125 -6.5 L 3.9375 -6.5 C 4.90625 -6.5 5.046875 -5.78125 5.046875 -5.25 Z M 5.296875 -1.96875 C 5.296875 -1.25 4.96875 -0.578125 3.953125 -0.578125 L 2.703125 -0.578125 C 2.234375 -0.578125 2.40625 -0.515625 2.40625 -0.84375 L 2.40625 -3.421875 L 4.09375 -3.421875 C 5.078125 -3.421875 5.296875 -2.625 5.296875 -1.96875 Z M 5.296875 -1.96875 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547002-0-3\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.828125 -2.453125 C 6.828125 -2.546875 6.625 -2.765625 6.5 -2.765625 C 6.390625 -2.765625 6.1875 -2.5625 6.1875 -2.46875 C 6.09375 -1.03125 5.234375 -0.359375 4.140625 -0.359375 C 3.53125 -0.359375 1.78125 -0.5625 1.78125 -3.53125 C 1.78125 -6.515625 3.53125 -6.71875 4.140625 -6.71875 C 5.21875 -6.71875 5.90625 -5.9375 6.109375 -4.484375 C 6.125 -4.34375 6.328125 -4.1875 6.46875 -4.1875 C 6.625 -4.1875 6.828125 -4.34375 6.828125 -4.5625 L 6.828125 -6.921875 C 6.828125 -7.09375 6.625 -7.296875 6.515625 -7.296875 C 6.484375 -7.296875 6.296875 -7.25 6.21875 -7.140625 L 5.828125 -6.5625 C 5.625 -6.765625 4.984375 -7.296875 4.03125 -7.296875 C 2.15625 -7.296875 0.359375 -5.578125 0.359375 -3.53125 C 0.359375 -1.46875 2.171875 0.21875 4.03125 0.21875 C 5.65625 0.21875 6.828125 -1.296875 6.828125 -2.453125 Z M 6.828125 -2.453125 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547002-0-4\">\n",
       "<path style=\"stroke:none;\" d=\"M 7.25 -3.484375 C 7.25 -5.375 5.703125 -7.078125 4 -7.078125 L 0.15625 -7.078125 L 0.15625 -6.5 L 0.59375 -6.5 C 1.359375 -6.5 1.171875 -6.515625 1.171875 -6.15625 L 1.171875 -0.90625 C 1.171875 -0.546875 1.359375 -0.578125 0.59375 -0.578125 L 0.15625 -0.578125 L 0.15625 0 L 4 0 C 5.671875 0 7.25 -1.609375 7.25 -3.484375 Z M 5.859375 -3.484375 C 5.859375 -2.375 5.71875 -1.875 5.359375 -1.390625 C 5.15625 -1.109375 4.734375 -0.578125 3.734375 -0.578125 L 2.71875 -0.578125 C 2.25 -0.578125 2.4375 -0.515625 2.4375 -0.84375 L 2.4375 -6.234375 C 2.4375 -6.5625 2.25 -6.5 2.71875 -6.5 L 3.71875 -6.5 C 4.34375 -6.5 4.890625 -6.3125 5.390625 -5.609375 C 5.828125 -5.03125 5.859375 -4.25 5.859375 -3.484375 Z M 5.859375 -3.484375 \"/>\n",
       "</symbol>\n",
       "</g>\n",
       "</defs>\n",
       "<g id=\"surface1\">\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -7.087219 -7.085656 L -21.098938 -21.101281 \" transform=\"matrix(1,0,0,-1,35.263,6.887)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.31879;stroke-linecap:round;stroke-linejoin:round;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -1.196795 1.595425 C -1.094595 0.996036 -0.000778709 0.101095 0.300297 -0.00110486 C -0.000778709 -0.0977805 -1.097357 -0.995483 -1.194033 -1.594873 \" transform=\"matrix(-0.7071,0.7071,0.7071,0.7071,14.16234,27.98766)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -0.00128125 -7.085656 L -0.00128125 -77.659875 \" transform=\"matrix(1,0,0,-1,35.263,6.887)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.31879;stroke-linecap:round;stroke-linejoin:round;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -1.195467 1.592469 C -1.097811 0.994812 -0.000155 0.100281 0.300626 -0.00128125 C -0.000155 -0.0989375 -1.097811 -0.997375 -1.195467 -1.595031 \" transform=\"matrix(0,1,1,0,35.263,84.54703)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -28.345031 -35.26925 L -28.345031 -49.093469 \" transform=\"matrix(1,0,0,-1,35.263,6.887)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.31879;stroke-linecap:round;stroke-linejoin:round;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -1.195884 1.595519 C -1.094321 0.997862 -0.00057125 0.099425 0.30021 0.00176875 C -0.00057125 -0.0997938 -1.094321 -0.994325 -1.195884 -1.595888 \" transform=\"matrix(0,1,1,0,6.9162,55.98104)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -21.23175 -63.808313 L -7.247375 -77.792688 \" transform=\"matrix(1,0,0,-1,35.263,6.887)\"/>\n",
       "<path style=\"fill:none;stroke-width:0.31879;stroke-linecap:round;stroke-linejoin:round;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -1.198009 1.594013 C -1.095809 0.994624 -0.00199229 0.0996836 0.299083 -0.00251644 C -0.00199229 -0.0991921 -1.095809 -0.994133 -1.195246 -1.596284 \" transform=\"matrix(0.7071,0.7071,0.7071,-0.7071,28.01686,84.68127)\"/>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547002-0-1\" x=\"31.527\" y=\"10.454\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547002-0-2\" x=\"3.39\" y=\"38.636\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547002-0-3\" x=\"3.321\" y=\"66.982\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547002-0-4\" x=\"31.458\" y=\"95.328\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"A\\\" [],\\n2/\\\"B\\\" [],\\n3/\\\"C\\\" [],\\n4/\\\"D\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"A\", \"B\", \"C\", \"D\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can even use unicode."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/svg+xml": [
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",
       "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"41.1pt\" height=\"97.538pt\" viewBox=\"0 0 41.1 97.538\" version=\"1.1\">\n",
       "<defs>\n",
       "<g>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547003-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547003-0-1\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.546875 -0.734375 C 6.53125 -0.796875 6.265625 -0.96875 6.203125 -0.96875 C 6.140625 -0.96875 5.90625 -0.796875 5.90625 -0.734375 C 5.84375 -0.234375 5.796875 -0.15625 5.796875 -0.15625 L 5.65625 -0.375 C 5.359375 -0.375 5.359375 -1.015625 5.296875 -1.25 C 5.25 -1.46875 5.1875 -1.390625 5.25 -1.515625 C 5.90625 -2.6875 5.8125 -3.859375 5.8125 -3.859375 C 5.8125 -3.859375 5.640625 -4.1875 5.53125 -4.1875 C 5.4375 -4.1875 5.25 -4.015625 5.234375 -3.84375 C 5.21875 -3.203125 5.140625 -2.546875 4.8125 -1.96875 L 5.15625 -1.859375 L 5 -2.484375 C 4.609375 -4.046875 3.359375 -4.671875 2.625 -4.671875 C 1.25 -4.671875 0.09375 -3.109375 0.453125 -1.703125 C 0.671875 -0.78125 1.671875 0.109375 2.6875 0.109375 C 3.3125 0.109375 4.109375 -0.15625 4.515625 -0.5625 C 4.640625 -0.328125 5.25 0.109375 5.6875 0.109375 C 6.21875 0.109375 6.59375 -0.5625 6.546875 -0.734375 Z M 4.328125 -1.21875 C 3.65625 -0.453125 3.046875 -0.375 2.640625 -0.375 C 2.046875 -0.375 1.828125 -0.6875 1.671875 -1.328125 C 1.5625 -1.8125 1.546875 -2.890625 1.734375 -3.40625 C 2.03125 -4.125 2.3125 -4.1875 2.65625 -4.1875 C 3.65625 -4.1875 3.78125 -3.015625 3.96875 -2.234375 C 4.0625 -1.859375 4.203125 -1.28125 4.25 -1.140625 Z M 4.328125 -1.21875 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547003-0-2\">\n",
       "<path style=\"stroke:none;\" d=\"M 5.046875 -1.984375 C 5.03125 -2.203125 5.015625 -2.421875 4.96875 -2.625 C 4.859375 -3.015625 4.609375 -3.484375 4.34375 -3.796875 C 4.171875 -3.96875 4 -4.109375 3.9375 -4.140625 C 3.875 -4.09375 3.96875 -4.15625 4.046875 -4.234375 C 4.359375 -4.53125 4.625 -5.03125 4.625 -5.484375 C 4.625 -5.609375 4.609375 -5.734375 4.578125 -5.859375 C 4.5 -6.15625 4.265625 -6.546875 4.03125 -6.765625 C 3.671875 -7.09375 3.078125 -7.3125 2.609375 -7.3125 C 1.421875 -7.3125 0.640625 -5.796875 0.640625 -4.453125 L 0.640625 1.6875 C 0.65625 1.765625 0.90625 1.9375 0.96875 1.9375 L 1.015625 1.9375 C 1.0625 1.9375 1.3125 1.78125 1.3125 1.734375 L 1.296875 -1 L 0.953125 -0.90625 C 1.28125 -0.328125 1.96875 0.109375 2.65625 0.109375 C 3.21875 0.109375 3.921875 -0.125 4.34375 -0.5 C 4.734375 -0.859375 5.03125 -1.453125 5.046875 -1.984375 Z M 3.96875 -2.03125 C 3.96875 -1.578125 3.921875 -1.203125 3.625 -0.859375 C 3.328125 -0.53125 3.046875 -0.375 2.609375 -0.375 C 1.890625 -0.375 1.546875 -0.78125 1.359375 -1.5 C 1.328125 -1.65625 1.3125 -1.8125 1.3125 -1.984375 L 1.296875 -4.390625 C 1.3125 -5.65625 1.5625 -6.8125 2.65625 -6.8125 C 2.984375 -6.8125 3.171875 -6.703125 3.390625 -6.453125 C 3.515625 -6.296875 3.53125 -6.21875 3.578125 -6.03125 C 3.625 -5.875 3.640625 -5.703125 3.640625 -5.53125 C 3.640625 -5.15625 3.625 -4.875 3.375 -4.578125 C 3.3125 -4.515625 3.234375 -4.453125 3.25 -4.453125 C 3.09375 -4.515625 2.84375 -4.5625 2.609375 -4.5625 C 2.25 -4.5625 1.625 -4.421875 1.625 -4.15625 L 1.640625 -4.09375 C 1.6875 -3.84375 2.296875 -3.71875 2.65625 -3.71875 C 2.90625 -3.71875 3.140625 -3.765625 3.3125 -3.828125 C 3.375 -3.78125 3.515625 -3.65625 3.625 -3.5 C 3.78125 -3.296875 3.8125 -3.15625 3.875 -2.90625 C 3.953125 -2.625 3.96875 -2.328125 3.96875 -2.03125 Z M 3.015625 -4.28125 C 2.890625 -4.234375 2.734375 -4.203125 2.609375 -4.203125 C 2.375 -4.203125 2.265625 -4.0625 2.265625 -4.109375 C 2.28125 -4.203125 2.40625 -4.0625 2.65625 -4.0625 C 2.78125 -4.0625 2.90625 -4.046875 3.015625 -4.015625 Z M 3.015625 -4.28125 \"/>\n",
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       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [],\\n2/\\\"β\\\" [],\\n3/\\\"γ\\\" [],\\n4/\\\"δ\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"δ\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can also have latex labels."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
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       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"\\$\\\\int_0^\\\\infty f(x) dx\\$\\\" [],\\n2/\\\"\\$\\\\sqrt{2}\\$\\\" [],\\n3/\\\"\\$x^2\\$\\\" [],\\n4/\\\"\\$\\\\frac{1}{2}\\$\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "using LaTeXStrings\n",
    "TikzGraphs.plot(g, [L\"\\int_0^\\infty f(x) dx\", L\"\\sqrt{2}\", L\"x^2\", L\"\\frac{1}{2}\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can have repeated labels."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
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      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [],\\n2/\\\"β\\\" [],\\n3/\\\"γ\\\" [],\\n4/\\\"α\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"α\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can specify the style for the nodes."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
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      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [draw, rounded corners, fill=blue!10],\\n2/\\\"β\\\" [draw, rounded corners, fill=blue!10],\\n3/\\\"γ\\\" [draw, rounded corners, fill=blue!10],\\n4/\\\"α\\\" [draw, rounded corners, fill=blue!10],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"α\"], node_style=\"draw, rounded corners, fill=blue!10\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can override the styles of selected nodes using a dictionary."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
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       "</g>\n",
       "<g clip-path=\"url(#clip-1653196084547007-4)\" clip-rule=\"nonzero\">\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M 2.5275 5.577719 L -2.527188 5.577719 C -4.730313 5.577719 -6.515469 3.792563 -6.515469 1.593344 L -6.515469 -1.59025 C -6.515469 -3.793375 -4.730313 -5.578531 -2.527188 -5.578531 L 2.5275 -5.578531 C 4.730625 -5.578531 6.511875 -3.793375 6.511875 -1.59025 L 6.511875 1.593344 C 6.511875 3.792563 4.730625 5.577719 2.5275 5.577719 Z M 2.5275 5.577719 \" transform=\"matrix(1,0,0,-1,34.785,90.816)\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547007-0-1\" x=\"31.592\" y=\"92.963\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [draw, rounded corners, fill=blue!10,fill=green!10],\\n2/\\\"β\\\" [draw, rounded corners, fill=blue!10],\\n3/\\\"γ\\\" [draw, rounded corners, fill=blue!10,fill=yellow!10],\\n4/\\\"α\\\" [draw, rounded corners, fill=blue!10],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"α\"], node_style=\"draw, rounded corners, fill=blue!10\", node_styles=Dict(1=>\"fill=green!10\",3=>\"fill=yellow!10\"))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Edges"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can set edge labels using a dictionary."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
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       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [],\\n2/\\\"β\\\" [],\\n3/\\\"γ\\\" [],\\n4/\\\"α\\\" [],\\n;\\n1 -> [,edge label={x},] 2;\\n1 -> [,edge label={y},] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"α\"], edge_labels=Dict((1,2)=>\"x\", (1,4)=>\"y\"))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can set the style for the edges."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "<defs>\n",
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       "</defs>\n",
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       "<g style=\"fill:rgb(0%,100%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547009-0-1\" x=\"24.194\" y=\"27.302\"/>\n",
       "</g>\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,100%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M -0.0000625 -5.774563 L -0.0000625 -78.805813 \" transform=\"matrix(1,0,0,-1,34.586,5.577)\"/>\n",
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       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547009-0-3\" x=\"31.393\" y=\"7.724\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547009-0-4\" x=\"3.46\" y=\"36.473\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547009-0-5\" x=\"3.321\" y=\"63.4\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547009-0-3\" x=\"31.393\" y=\"92.763\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"α\\\" [],\\n2/\\\"β\\\" [],\\n3/\\\"γ\\\" [],\\n4/\\\"α\\\" [],\\n;\\n1 -> [green,edge label={x},] 2;\\n1 -> [green,edge label={y},] 4;\\n2 -> [green,] 3;\\n3 -> [green,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, [\"α\", \"β\", \"γ\", \"α\"], edge_labels=Dict((1,2)=>\"x\", (1,4)=>\"y\"), edge_style=\"green\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can overide the style for specific edges as specified by a dictionary."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/svg+xml": [
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",
       "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"46.258pt\" height=\"98.37pt\" viewBox=\"0 0 46.258 98.37\" version=\"1.1\">\n",
       "<defs>\n",
       "<g>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1653196084547010-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
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      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [green,edge label={x},blue,] 2;\\n1 -> [green,edge label={y},] 4;\\n2 -> [green,] 3;\\n3 -> [green,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, edge_labels=Dict((1,2)=>\"x\", (1,4)=>\"y\"), edge_style=\"green\", edge_styles=Dict((1,2)=>\"blue\"))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can draw self-loop edges by specifying the edge style."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
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      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,edge label={x},] 2;\\n1 -> [,edge label={y},] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n4 -> [,edge label={loop},loop right,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "loop_g = deepcopy(g)\n",
    "add_edge!(loop_g, (4,4))\n",
    "TikzGraphs.plot(loop_g, edge_labels=Dict((1,2)=>\"x\", (1,4)=>\"y\", (4,4)=>\"loop\"), edge_styles=Dict((4,4)=>\"loop right\"))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Layouts"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can use different layouts (currently just Layered [default], Spring, and SimpleNecklace are supported)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
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      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, Layouts.Layered())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "\n"
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      "text/plain": [
       "TikzPicture(\"\\\\graph [spring layout, random seed = 42,, ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{force}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, Layouts.Spring())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can set the random seed for the Spring layout."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
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      "text/plain": [
       "TikzPicture(\"\\\\graph [spring layout, random seed = 52,, ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{force}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, Layouts.Spring(randomSeed=52))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "\n"
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       "TikzPicture(\"\\\\graph [simple necklace layout, , ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{circular}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, Layouts.SimpleNecklace())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Options"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
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       "TikzPicture(\"\\\\graph [layered layout, , ] {\\n1/\\\"1\\\" [draw],\\n2/\\\"2\\\" [draw],\\n3/\\\"3\\\" [draw],\\n4/\\\"4\\\" [draw],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"scale=2, font=\\\\huge\\\\sf\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
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     },
     "execution_count": 19,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "TikzGraphs.plot(g, node_style=\"draw\", options=\"scale=2, font=\\\\huge\\\\sf\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
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       "<g clip-path=\"url(#clip-1653196084547017-2)\" clip-rule=\"nonzero\">\n",
       "<path style=\"fill:none;stroke-width:0.3985;stroke-linecap:butt;stroke-linejoin:miter;stroke:rgb(0%,0%,0%);stroke-opacity:1;stroke-miterlimit:10;\" d=\"M 8.83125 0.00003125 C 8.83125 4.878938 4.878125 8.832063 -0.00078125 8.832063 C -4.875781 8.832063 -8.832812 4.878938 -8.832812 0.00003125 C -8.832812 -4.878875 -4.875781 -8.832 -0.00078125 -8.832 C 4.878125 -8.832 8.83125 -4.878875 8.83125 0.00003125 Z M 8.83125 0.00003125 \" transform=\"matrix(1,0,0,-1,37.45,94.043)\"/>\n",
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       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1653196084547017-0-4\" x=\"34.959\" y=\"97.415\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "TikzPicture(\"\\\\graph [layered layout, , nodes={draw,circle}] {\\n1/\\\"1\\\" [draw],\\n2/\\\"2\\\" [draw],\\n3/\\\"3\\\" [draw],\\n4/\\\"4\\\" [draw],\\n;\\n1 -> [,] 2;\\n1 -> [,] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\r\\n\\\\setmainfont{Latin Modern Math}\\r\\n\\\\usetikzlibrary{arrows}\\r\\n\\\\usetikzlibrary{graphs}\\r\\n\\\\usetikzlibrary{graphdrawing}\\r\\n\\r\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\r\\n\\\\usepackage{luacode}\\r\\n\\\\begin{luacode*}\\r\\n\\tfunction pgf_lookup_and_require(name)\\r\\n\\tlocal sep = package.config:sub(1,1)\\r\\n\\tlocal function lookup(name)\\r\\n\\tlocal sub = name:gsub('%.',sep)  \\r\\n\\tif kpse.find_file(sub, 'lua') then\\r\\n\\trequire(name)\\r\\n\\telseif kpse.find_file(sub, 'clua') then\\r\\n\\tcollectgarbage('stop') \\r\\n\\trequire(name)\\r\\n\\tcollectgarbage('restart')\\r\\n\\telse\\r\\n\\treturn false\\r\\n\\tend\\r\\n\\treturn true\\r\\n\\tend\\r\\n\\treturn\\r\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\r\\n\\tlookup('pgf.gd.' .. name) or\\r\\n\\tlookup(name .. '.library') or\\r\\n\\tlookup(name) \\r\\n\\tend\\r\\n\\\\end{luacode*}\\r\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, node_style=\"draw\", graph_options=\"nodes={draw,circle}\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Future Plans"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Gradually, more functionality from pgf/tikz will be migrated into this package."
   ]
  }
 ],
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