docs/DOT-visualizations.ipynb

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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# DOT format visualizations"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "------\n",
    "\n",
    "## Setup"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "use Graph;\n",
    "use Graph::HexagonalGrid;"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Here we set a collection of visualization variables:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{charge => {iterations => 4, strength => -30}, collision => {iterations => 4, radius => 50}, link => {distance => 30}}"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "my $title-color = 'Ivory';\n",
    "my $stroke-color = 'SlateGray';\n",
    "my $tooltip-color = 'LightBlue';\n",
    "my $tooltip-background-color = 'none';\n",
    "my $background = '#1F1F1F';\n",
    "my $color-scheme = 'schemeTableau10';\n",
    "my $edge-thickness = 3;\n",
    "my $vertex-size = 6;\n",
    "my $engine = 'neato';\n",
    "my $mmd-theme = q:to/END/;\n",
    "%%{\n",
    "  init: {\n",
    "    'theme': 'forest',\n",
    "    'themeVariables': {\n",
    "      'lineColor': 'Ivory'\n",
    "    }\n",
    "  }\n",
    "}%%\n",
    "END\n",
    "my %force = collision => {iterations => 0, radius => 10},link => {distance => 180};\n",
    "my %force2 = charge => {strength => -30, iterations => 4}, collision => {radius => 50, iterations => 4}, link => {distance => 30};"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Dot"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "&neato"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "sub dot(Graph:D $g, *%opts) { $g.dot(:svg, |%opts) }\n",
    "sub fdp(Graph:D $g, *%opts) { $g.dot(engine => 'fdp', :svg, |%opts) }\n",
    "sub sfdp(Graph:D $g, *%opts) { $g.dot(engine => 'sfdp', :svg, |%opts) }\n",
    "sub neato(Graph:D $g, *%opts) { $g.dot(engine => 'neato', :svg, |%opts) }"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "-----\n",
    "\n",
    "## Direct"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Here is a graph:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "Graph(vertexes => 38, edges => 49, directed => False)"
      ]
     },
     "execution_count": 50,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% html\n",
    "my $g = Graph::HexagonalGrid.new(3, 4, scale => 0.4)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Visualization using the Graphviz DOT language and CLI script `neato`:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
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     },
     "execution_count": 51,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% html\n",
    "$g.dot(\n",
    "    background => '#1F1F1F',\n",
    "    :node-labels,\n",
    "    node-width => .3,\n",
    "    node-height => .3,\n",
    "    node-shape => 'hexagon',\n",
    "    node-color => 'Ivory',\n",
    "    node-penwidth => 1,\n",
    "    node-fill-color => 'SlateBlue',\n",
    "    node-font-size => 10,\n",
    "    edge-thickness => 4,\n",
    "    engine => 'neato', \n",
    "    graph-size => (8,8)\n",
    "):svg"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Remark:** The adverb \":svg\" specifies that the method `dot` to use Graphviz script specified with \":engine\" via Raku's `run`."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "-----\n",
    "\n",
    "# Using preamble"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In some cases it is better to write the graph visualization specs directly using the DOT language. \n",
    "Here is an example:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {},
   "outputs": [
    {
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       "</g>\n",
       "</g>\n",
       "</svg>\n"
      ]
     },
     "execution_count": 52,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% html\n",
    "my $preamble = q:to/END/;\n",
    "label = \"Hexagonal grid\";\n",
    "labelloc = \"t\";\n",
    "fontsize = 20;\n",
    "fontcolor=\"Gray\";\n",
    "bgcolor = \"#1F1F1F\";\n",
    "node [style=filled, color = \"Ivory\", fillcolor = \"SlateBlue\", fontsize=12, fontcolor = \"Ivory\", shape = \"hexagon\", fixedsize=true, width=0.3, height=0.3];\n",
    "edge [color = \"SteelBlue\", penwidth = 6]\n",
    "END\n",
    "\n",
    "$g.dot(:$preamble, engine => 'neato'):svg"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "-----\n",
    "\n",
    "## Redirection"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In this section is shown how to generate the graph images using access to the Graphviz CLI scripts. (Like `dot`, `neato`, etc.)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Get the DOT spec for a graph:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "graph {\n",
       "\"16\" [pos=\"0.692820323028,2!\"];\n",
       "\"22\" [pos=\"2.078460969083,-0.39999999999999997!\"];\n",
       "\"37\" [pos=\"4.849742261193,2!\"];\n",
       "\"11\" [pos=\"0,0.7999999999999999!\"];\n",
       "\"17\" [pos=\"1.385640646055,-1.5999999999999999!\"];\n",
       "\"1\" [pos=\"-2.078460969083,-0.39999999999999997!\"];\n",
       "\"6\" [pos=\"-0.692820323028,-0.39999999999999997!\"];\n",
       "\"20\" [pos=\"1.385640646055,2.4!\"];\n",
       "\"4\" [pos=\"-1.385640646055,0.7999999999999999!\"];\n",
       "\"10\" [pos=\"0,0!\"];\n",
       "\"14\" [pos=\"0.692820323028,-0.39999999999999997!\"];\n",
       "\"19\" [pos=\"1.385640646055,0.7999999999999999!\"];\n",
       "\"9\" [pos=\"0,-1.5999999999999999!\"];\n",
       "\"2\" [pos=\"-1.385640646055,-1.5999999999999999!\"];\n",
       "\"15\" [pos=\"0.692820323028,1.2!\"];\n",
       "\"34\" [pos=\"4.1569219381649996,0.7999999999999999!\"];\n",
       "\"12\" [pos=\"0,2.4!\"];\n",
       "\"29\" [pos=\"3.464101615138,-1.2!\"];\n",
       "\"27\" [pos=\"2.77128129211,0.7999999999999999!\"];\n",
       "\"13\" [pos=\"0.692820323028,-1.2!\"];\n",
       "\"28\" [pos=\"2.77128129211,2.4!\"];\n",
       "\"35\" [pos=\"4.1569219381649996,2.4!\"];\n",
       "\"21\" [pos=\"2.078460969083,-1.2!\"];\n",
       "\"24\" [pos=\"2.078460969083,2!\"];\n",
       "\"26\" [pos=\"2.77128129211,0!\"];\n",
       "\"18\" [pos=\"1.385640646055,0!\"];\n",
       "\"7\" [pos=\"-0.692820323028,1.2!\"];\n",
       "\"3\" [pos=\"-1.385640646055,0!\"];\n",
       "\"8\" [pos=\"-0.692820323028,2!\"];\n",
       "\"33\" [pos=\"4.1569219381649996,0!\"];\n",
       "\"36\" [pos=\"4.849742261193,1.2!\"];\n",
       "\"32\" [pos=\"3.464101615138,2!\"];\n",
       "\"5\" [pos=\"-0.692820323028,-1.2!\"];\n",
       "\"25\" [pos=\"2.77128129211,-1.5999999999999999!\"];\n",
       "\"31\" [pos=\"3.464101615138,1.2!\"];\n",
       "\"0\" [pos=\"-2.078460969083,-1.2!\"];\n",
       "\"30\" [pos=\"3.464101615138,-0.39999999999999997!\"];\n",
       "\"23\" [pos=\"2.078460969083,1.2!\"]\n",
       "\"27\" -- \"31\"\n",
       "\"21\" -- \"25\"\n",
       "\"0\" -- \"1\"\n",
       "\"23\" -- \"24\"\n",
       "\"23\" -- \"27\"\n",
       "\"28\" -- \"32\"\n",
       "\"35\" -- \"37\"\n",
       "\"26\" -- \"30\"\n",
       "\"26\" -- \"27\"\n",
       "\"24\" -- \"28\"\n",
       "\"32\" -- \"35\"\n",
       "\"15\" -- \"19\"\n",
       "\"15\" -- \"16\"\n",
       "\"33\" -- \"34\"\n",
       "\"10\" -- \"14\"\n",
       "\"10\" -- \"11\"\n",
       "\"21\" -- \"22\"\n",
       "\"22\" -- \"26\"\n",
       "\"19\" -- \"23\"\n",
       "\"29\" -- \"30\"\n",
       "\"30\" -- \"33\"\n",
       "\"11\" -- \"7\"\n",
       "\"4\" -- \"7\"\n",
       "\"7\" -- \"8\"\n",
       "\"12\" -- \"16\"\n",
       "\"3\" -- \"4\"\n",
       "\"1\" -- \"3\"\n",
       "\"31\" -- \"32\"\n",
       "\"31\" -- \"34\"\n",
       "\"34\" -- \"36\"\n",
       "\"13\" -- \"14\"\n",
       "\"14\" -- \"18\"\n",
       "\"11\" -- \"15\"\n",
       "\"25\" -- \"29\"\n",
       "\"0\" -- \"2\"\n",
       "\"10\" -- \"6\"\n",
       "\"5\" -- \"6\"\n",
       "\"3\" -- \"6\"\n",
       "\"20\" -- \"24\"\n",
       "\"2\" -- \"5\"\n",
       "\"5\" -- \"9\"\n",
       "\"12\" -- \"8\"\n",
       "\"36\" -- \"37\"\n",
       "\"18\" -- \"19\"\n",
       "\"18\" -- \"22\"\n",
       "\"13\" -- \"9\"\n",
       "\"13\" -- \"17\"\n",
       "\"17\" -- \"21\"\n",
       "\"16\" -- \"20\"\n",
       "}"
      ]
     },
     "execution_count": 53,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "my $spec = $g.dot()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Below the following steps are done:\n",
    "\n",
    "1. Export DOT spec into a file\n",
    "2. Generate the SVG code and safe to a file\n",
    "3. Import and show into an HTML magic cell"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "Proc.new(in => IO::Pipe, out => IO::Pipe, err => IO::Pipe, os-error => Str, exitcode => 0, signal => 0, pid => 50927, command => (\"neato ./example-spec.dot  -Tsvg > example-spec.svg\",))"
      ]
     },
     "execution_count": 54,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "spurt('./example-spec.dot', $spec);\n",
    "shell \"neato ./example-spec.dot  -Tsvg > example-spec.svg\";"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [
    {
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       "<!-- 31&#45;&#45;34 -->\n",
       "<g id=\"edge29\" class=\"edge\">\n",
       "<title>31&#45;&#45;34</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M446.93,-207.55C449.71,-205.95 452.55,-204.31 455.33,-202.71\"/>\n",
       "</g>\n",
       "<!-- 31&#45;&#45;32 -->\n",
       "<g id=\"edge28\" class=\"edge\">\n",
       "<title>31&#45;&#45;32</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M426.06,-237.83C426.06,-244.55 426.06,-252.17 426.06,-258.9\"/>\n",
       "</g>\n",
       "<!-- 0 -->\n",
       "<g id=\"node36\" class=\"node\">\n",
       "<title>0</title>\n",
       "<ellipse fill=\"none\" stroke=\"black\" cx=\"27\" cy=\"-46.8\" rx=\"27\" ry=\"18\"/>\n",
       "<text text-anchor=\"middle\" x=\"27\" y=\"-41.75\" font-family=\"Times,serif\" font-size=\"14.00\">0</text>\n",
       "</g>\n",
       "<!-- 0&#45;&#45;1 -->\n",
       "<g id=\"edge3\" class=\"edge\">\n",
       "<title>0&#45;&#45;1</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M27,-65.02C27,-71.75 27,-79.37 27,-86.1\"/>\n",
       "</g>\n",
       "<!-- 0&#45;&#45;2 -->\n",
       "<g id=\"edge35\" class=\"edge\">\n",
       "<title>0&#45;&#45;2</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M47.87,-34.75C50.64,-33.15 53.49,-31.51 56.26,-29.91\"/>\n",
       "</g>\n",
       "<!-- 30&#45;&#45;33 -->\n",
       "<g id=\"edge21\" class=\"edge\">\n",
       "<title>30&#45;&#45;33</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M446.93,-116.45C449.71,-118.05 452.55,-119.69 455.33,-121.29\"/>\n",
       "</g>\n",
       "<!-- 23&#45;&#45;27 -->\n",
       "<g id=\"edge5\" class=\"edge\">\n",
       "<title>23&#45;&#45;27</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M347.16,-207.55C349.94,-205.95 352.79,-204.31 355.56,-202.71\"/>\n",
       "</g>\n",
       "<!-- 23&#45;&#45;24 -->\n",
       "<g id=\"edge4\" class=\"edge\">\n",
       "<title>23&#45;&#45;24</title>\n",
       "<path fill=\"none\" stroke=\"black\" d=\"M326.3,-237.83C326.3,-244.55 326.3,-252.17 326.3,-258.9\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n"
      ]
     },
     "execution_count": 55,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#% html\n",
    "slurp('./example-spec.svg')"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "RakuChatbook",
   "language": "raku",
   "name": "raku"
  },
  "language_info": {
   "file_extension": ".raku",
   "mimetype": "text/x-raku",
   "name": "raku",
   "version": "6.d"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}