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 integrates with IJulia, outputting 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": [
    {
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       "</symbol>\n",
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       "</defs>\n",
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       "\n"
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      "text/plain": [
       "TikzPictures.TikzPicture(\"\\\\graph [layered layout, ] {\\n1/\\\"1\\\" [],\\n2/\\\"2\\\" [],\\n3/\\\"3\\\" [],\\n4/\\\"4\\\" [],\\n;\\n1 -> [,] 2;\\n2 -> [,] 3;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
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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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      ],
      "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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-1636526391308277-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308277-0-1\">\n",
       "<path style=\"stroke:none;\" d=\"M 7.140625 0 L 7.140625 -0.3125 L 6.96875 -0.3125 C 6.375 -0.3125 6.234375 -0.375 6.125 -0.703125 L 3.96875 -6.9375 C 3.921875 -7.0625 3.890625 -7.140625 3.734375 -7.140625 C 3.578125 -7.140625 3.546875 -7.078125 3.5 -6.9375 L 1.4375 -0.984375 C 1.25 -0.46875 0.859375 -0.3125 0.3125 -0.3125 L 0.3125 0 L 1.328125 -0.03125 L 2.484375 0 L 2.484375 -0.3125 C 1.984375 -0.3125 1.734375 -0.5625 1.734375 -0.8125 C 1.734375 -0.84375 1.75 -0.953125 1.75 -0.96875 L 2.21875 -2.265625 L 4.671875 -2.265625 L 5.203125 -0.75 C 5.21875 -0.703125 5.234375 -0.640625 5.234375 -0.609375 C 5.234375 -0.3125 4.671875 -0.3125 4.40625 -0.3125 L 4.40625 0 C 4.765625 -0.03125 5.46875 -0.03125 5.84375 -0.03125 Z M 4.5625 -2.578125 L 2.328125 -2.578125 L 3.4375 -5.828125 Z M 4.5625 -2.578125 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308277-0-2\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.484375 -1.828125 C 6.484375 -2.6875 5.671875 -3.4375 4.5625 -3.5625 C 5.53125 -3.75 6.21875 -4.390625 6.21875 -5.125 C 6.21875 -5.984375 5.296875 -6.8125 4 -6.8125 L 0.359375 -6.8125 L 0.359375 -6.5 L 0.59375 -6.5 C 1.359375 -6.5 1.390625 -6.390625 1.390625 -6.03125 L 1.390625 -0.78125 C 1.390625 -0.421875 1.359375 -0.3125 0.59375 -0.3125 L 0.359375 -0.3125 L 0.359375 0 L 4.265625 0 C 5.59375 0 6.484375 -0.890625 6.484375 -1.828125 Z M 5.25 -5.125 C 5.25 -4.484375 4.765625 -3.65625 3.65625 -3.65625 L 2.21875 -3.65625 L 2.21875 -6.09375 C 2.21875 -6.4375 2.234375 -6.5 2.703125 -6.5 L 3.9375 -6.5 C 4.90625 -6.5 5.25 -5.65625 5.25 -5.125 Z M 5.5 -1.828125 C 5.5 -1.125 4.96875 -0.3125 3.953125 -0.3125 L 2.703125 -0.3125 C 2.234375 -0.3125 2.21875 -0.375 2.21875 -0.703125 L 2.21875 -3.421875 L 4.09375 -3.421875 C 5.078125 -3.421875 5.5 -2.5 5.5 -1.828125 Z M 5.5 -1.828125 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308277-0-3\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.625 -2.328125 C 6.625 -2.421875 6.625 -2.5 6.5 -2.5 C 6.390625 -2.5 6.390625 -2.4375 6.375 -2.328125 C 6.296875 -0.90625 5.234375 -0.09375 4.140625 -0.09375 C 3.53125 -0.09375 1.578125 -0.421875 1.578125 -3.40625 C 1.578125 -6.375 3.53125 -6.71875 4.140625 -6.71875 C 5.21875 -6.71875 6.109375 -5.8125 6.3125 -4.359375 C 6.328125 -4.21875 6.328125 -4.1875 6.46875 -4.1875 C 6.625 -4.1875 6.625 -4.21875 6.625 -4.421875 L 6.625 -6.78125 C 6.625 -6.953125 6.625 -7.03125 6.515625 -7.03125 C 6.484375 -7.03125 6.4375 -7.03125 6.359375 -6.90625 L 5.859375 -6.171875 C 5.5 -6.53125 4.984375 -7.03125 4.03125 -7.03125 C 2.15625 -7.03125 0.5625 -5.4375 0.5625 -3.40625 C 0.5625 -1.34375 2.171875 0.21875 4.03125 0.21875 C 5.65625 0.21875 6.625 -1.171875 6.625 -2.328125 Z M 6.625 -2.328125 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308277-0-4\">\n",
       "<path style=\"stroke:none;\" d=\"M 7.046875 -3.34375 C 7.046875 -5.25 5.703125 -6.8125 4 -6.8125 L 0.34375 -6.8125 L 0.34375 -6.5 L 0.59375 -6.5 C 1.359375 -6.5 1.375 -6.390625 1.375 -6.03125 L 1.375 -0.78125 C 1.375 -0.421875 1.359375 -0.3125 0.59375 -0.3125 L 0.34375 -0.3125 L 0.34375 0 L 4 0 C 5.671875 0 7.046875 -1.46875 7.046875 -3.34375 Z M 6.046875 -3.34375 C 6.046875 -2.25 5.859375 -1.640625 5.5 -1.15625 C 5.296875 -0.890625 4.734375 -0.3125 3.734375 -0.3125 L 2.71875 -0.3125 C 2.25 -0.3125 2.234375 -0.375 2.234375 -0.703125 L 2.234375 -6.09375 C 2.234375 -6.4375 2.25 -6.5 2.71875 -6.5 L 3.71875 -6.5 C 4.34375 -6.5 5.03125 -6.28125 5.53125 -5.578125 C 5.96875 -4.984375 6.046875 -4.125 6.046875 -3.34375 Z M 6.046875 -3.34375 \"/>\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 -63.808312 L -7.247375 -77.792687 \" 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-1636526391308277-0-1\" x=\"31.527\" y=\"10.454\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308277-0-2\" x=\"3.39\" y=\"38.636\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308277-0-3\" x=\"3.321\" y=\"66.982\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308277-0-4\" 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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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-1636526391308278-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308278-0-1\">\n",
       "<path style=\"stroke:none;\" d=\"M 6.34375 -0.59375 C 6.328125 -0.671875 6.265625 -0.703125 6.203125 -0.703125 C 6.140625 -0.703125 6.109375 -0.671875 6.09375 -0.59375 C 6.046875 -0.109375 5.65625 -0.109375 5.65625 -0.109375 C 5.359375 -0.109375 5.15625 -0.890625 5.109375 -1.125 C 5.046875 -1.328125 5.046875 -1.359375 5.109375 -1.46875 C 5.765625 -2.65625 5.671875 -3.8125 5.671875 -3.8125 C 5.671875 -3.8125 5.640625 -3.921875 5.53125 -3.921875 C 5.4375 -3.921875 5.4375 -3.890625 5.4375 -3.703125 C 5.40625 -3.078125 5.28125 -2.328125 4.953125 -1.734375 L 4.796875 -2.359375 C 4.40625 -3.921875 3.359375 -4.40625 2.625 -4.40625 C 1.25 -4.40625 0.296875 -2.984375 0.640625 -1.578125 C 0.875 -0.640625 1.671875 0.109375 2.6875 0.109375 C 3.3125 0.109375 3.96875 -0.125 4.578125 -0.734375 C 4.828125 -0.203125 5.25 0.109375 5.6875 0.109375 C 6.21875 0.109375 6.390625 -0.4375 6.34375 -0.59375 Z M 4.46875 -0.984375 C 3.78125 -0.21875 3.046875 -0.109375 2.640625 -0.109375 C 2.046875 -0.109375 1.640625 -0.5625 1.46875 -1.203125 C 1.359375 -1.6875 1.34375 -2.765625 1.53125 -3.265625 C 1.828125 -4 2.3125 -4.1875 2.65625 -4.1875 C 3.65625 -4.1875 3.984375 -2.875 4.171875 -2.109375 C 4.265625 -1.734375 4.40625 -1.15625 4.46875 -0.984375 Z M 4.46875 -0.984375 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308278-0-2\">\n",
       "<path style=\"stroke:none;\" d=\"M 4.84375 -1.859375 C 4.828125 -2.078125 4.8125 -2.296875 4.765625 -2.5 C 4.671875 -2.890625 4.46875 -3.265625 4.203125 -3.5625 C 4.03125 -3.734375 3.859375 -3.890625 3.65625 -4 C 3.734375 -4.0625 3.828125 -4.109375 3.90625 -4.203125 C 4.234375 -4.5 4.421875 -4.90625 4.421875 -5.359375 C 4.421875 -5.484375 4.421875 -5.609375 4.390625 -5.71875 C 4.3125 -6.03125 4.125 -6.3125 3.890625 -6.546875 C 3.53125 -6.859375 3.078125 -7.03125 2.609375 -7.03125 C 1.421875 -7.03125 0.84375 -5.671875 0.84375 -4.3125 L 0.84375 1.8125 C 0.859375 1.890625 0.90625 1.9375 0.96875 1.9375 L 1.015625 1.9375 C 1.0625 1.9375 1.109375 1.90625 1.109375 1.859375 L 1.09375 -0.875 C 1.421875 -0.296875 1.96875 0.109375 2.65625 0.109375 C 3.21875 0.109375 3.78125 -0.078125 4.203125 -0.453125 C 4.59375 -0.8125 4.828125 -1.328125 4.84375 -1.859375 Z M 4.171875 -1.90625 C 4.171875 -1.453125 4.0625 -0.984375 3.765625 -0.625 C 3.46875 -0.296875 3.046875 -0.109375 2.609375 -0.109375 C 1.890625 -0.109375 1.34375 -0.65625 1.171875 -1.359375 C 1.125 -1.53125 1.109375 -1.6875 1.109375 -1.859375 L 1.09375 -4.265625 C 1.109375 -5.515625 1.5625 -6.8125 2.65625 -6.8125 C 2.984375 -6.8125 3.3125 -6.671875 3.53125 -6.40625 C 3.65625 -6.265625 3.734375 -6.09375 3.78125 -5.90625 C 3.8125 -5.734375 3.84375 -5.578125 3.84375 -5.40625 C 3.84375 -5.03125 3.765625 -4.640625 3.515625 -4.359375 C 3.453125 -4.28125 3.375 -4.21875 3.3125 -4.171875 C 3.09375 -4.25 2.84375 -4.296875 2.609375 -4.296875 C 2.25 -4.296875 1.828125 -4.296875 1.828125 -4.03125 L 1.828125 -3.953125 C 1.890625 -3.71875 2.296875 -3.71875 2.65625 -3.71875 C 2.90625 -3.71875 3.140625 -3.765625 3.375 -3.84375 C 3.515625 -3.75 3.65625 -3.625 3.765625 -3.453125 C 3.921875 -3.25 4 -3.015625 4.078125 -2.765625 C 4.140625 -2.5 4.171875 -2.1875 4.171875 -1.90625 Z M 3.015625 -4.015625 C 2.890625 -3.96875 2.734375 -3.9375 2.609375 -3.9375 C 2.375 -3.9375 2.078125 -3.9375 2.078125 -3.984375 C 2.078125 -4.0625 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 -4.015625 \"/>\n",
       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308278-0-3\">\n",
       "<path style=\"stroke:none;\" d=\"M 5.140625 -4.203125 C 5.109375 -4.296875 4.984375 -4.296875 4.984375 -4.296875 C 4.953125 -4.296875 4.890625 -4.296875 4.890625 -4.234375 C 4.609375 -3.28125 4.453125 -2.28125 4.3125 -1.28125 C 4.21875 -1.578125 4.015625 -2.34375 3.390625 -3.3125 C 3 -3.921875 2.484375 -4.40625 1.796875 -4.40625 C 0.546875 -4.40625 0.234375 -2.890625 0.296875 -2.578125 C 0.328125 -2.484375 0.421875 -2.484375 0.515625 -2.484375 L 0.546875 -2.53125 C 0.640625 -3.671875 1.734375 -3.6875 1.84375 -3.6875 C 3.34375 -3.6875 3.890625 -1.9375 4.09375 -1.15625 C 4.234375 -0.546875 4.234375 -0.375 4.21875 -0.171875 C 4.171875 0.546875 4.171875 1.703125 4.234375 1.96875 C 4.25 2.078125 4.328125 2.140625 4.40625 2.140625 C 4.53125 2.140625 4.5625 1.921875 4.578125 1.546875 C 4.59375 0.703125 4.546875 0.140625 4.515625 -0.171875 C 4.5 -0.296875 4.484375 -0.421875 4.5 -0.5625 C 4.5625 -1.546875 4.828125 -3.03125 5.03125 -3.8125 C 5.078125 -3.9375 5.140625 -4.15625 5.140625 -4.203125 Z M 5.140625 -4.203125 \"/>\n",
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       "</svg>\n",
       "\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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
     "data": {
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       "</svg>\n",
       "\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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
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       "\n"
      ],
      "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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       "</svg>\n",
       "\n"
      ],
      "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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      "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
     "data": {
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       "<defs>\n",
       "<g>\n",
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       "<symbol overflow=\"visible\" id=\"glyph-1636526391308283-0-4\">\n",
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       "</symbol>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308283-0-5\">\n",
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       "</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 -5.777406 -5.774563 L -21.722719 -21.723781 \" transform=\"matrix(1,0,0,-1,34.586,5.577)\"/>\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 -1.196129 1.594519 C -1.096692 0.997892 -0.000113138 0.100189 0.2982 0.000751308 C -0.000113138 -0.0986865 -1.096692 -0.996389 -1.196129 -1.593016 \" transform=\"matrix(-0.7071,0.7071,0.7071,0.7071,12.86267,27.30033)\"/>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-1\" 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%,0%,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",
       "<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 -1.19526 1.593688 C -1.097604 0.996031 0.0000525 0.1015 0.296928 -0.0000625 C 0.0000525 -0.0977187 -1.097604 -0.996156 -1.19526 -1.593812 \" transform=\"matrix(0,1,1,0,34.586,84.38276)\"/>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-2\" x=\"38.106\" y=\"74.68\"/>\n",
       "</g>\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 -28.347719 -36.348781 L -28.347719 -49.442531 \" transform=\"matrix(1,0,0,-1,34.586,5.577)\"/>\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 -1.195531 1.592831 C -1.093969 0.995175 -0.00021875 0.100644 0.300562 -0.00091875 C -0.00021875 -0.098575 -1.093969 -0.997012 -1.195531 -1.594669 \" transform=\"matrix(0,1,1,0,6.2392,55.01975)\"/>\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 -21.906312 -63.133938 L -6.101625 -78.938625 \" transform=\"matrix(1,0,0,-1,34.586,5.577)\"/>\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 -1.197834 1.593881 C -1.095634 0.994492 -0.00181728 0.099551 0.296496 0.000113138 C -0.00181728 -0.0993247 -1.095634 -0.994265 -1.197834 -1.593655 \" transform=\"matrix(0.7071,0.7071,0.7071,-0.7071,28.48558,84.51699)\"/>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-3\" x=\"31.393\" y=\"7.724\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-4\" x=\"3.46\" y=\"36.473\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-5\" x=\"3.321\" y=\"63.4\"/>\n",
       "</g>\n",
       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308283-0-3\" 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 -> [,edge label={x},] 2;\\n1 -> [,edge label={y},] 4;\\n2 -> [,] 3;\\n3 -> [,] 4;\\n};\\n\", \"\", \"\\\\usepackage{fontspec}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": {
      "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=\"46.687pt\" height=\"96.193pt\" viewBox=\"0 0 46.687 96.193\" version=\"1.1\">\n",
       "<defs>\n",
       "<g>\n",
       "<symbol overflow=\"visible\" id=\"glyph-1636526391308284-0-0\">\n",
       "<path style=\"stroke:none;\" d=\"\"/>\n",
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       "</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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
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       "\n"
      ],
      "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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       "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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       "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
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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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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       "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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": [
    {
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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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\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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       "<g style=\"fill:rgb(0%,0%,0%);fill-opacity:1;\">\n",
       "  <use xlink:href=\"#glyph-1636526391308291-0-4\" x=\"60.213\" y=\"187.318\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n",
       "\n"
      ],
      "text/plain": [
       "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}\\n\\\\setmainfont{Latin Modern Math}\\n\\\\usetikzlibrary{arrows}\\n\\\\usetikzlibrary{graphs}\\n\\\\usetikzlibrary{graphdrawing}\\n\\n% from: https://tex.stackexchange.com/questions/453132/fresh-install-of-tl2018-no-tikz-graph-drawing-libraries-found\\n\\\\usepackage{luacode}\\n\\\\begin{luacode*}\\n\\tfunction pgf_lookup_and_require(name)\\n\\tlocal sep = package.config:sub(1,1)\\n\\tlocal function lookup(name)\\n\\tlocal sub = name:gsub('%.',sep)  \\n\\tif kpse.find_file(sub, 'lua') then\\n\\trequire(name)\\n\\telseif kpse.find_file(sub, 'clua') then\\n\\tcollectgarbage('stop') \\n\\trequire(name)\\n\\tcollectgarbage('restart')\\n\\telse\\n\\treturn false\\n\\tend\\n\\treturn true\\n\\tend\\n\\treturn\\n\\tlookup('pgf.gd.' .. name .. '.library') or\\n\\tlookup('pgf.gd.' .. name) or\\n\\tlookup(name .. '.library') or\\n\\tlookup(name) \\n\\tend\\n\\\\end{luacode*}\\n\\n\\\\usegdlibrary{layered}\", \"tikzpicture\", \"\", \"\", true, true)"
      ]
     },
     "execution_count": 19,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "TikzGraphs.plot(g, node_style=\"draw\", options=\"scale=2, font=\\\\huge\\\\sf\")"
   ]
  },
  {
   "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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