Graphviz的使用方法.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 展示Graphviz的画图能力"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "首先要用conda安装graphviz软件包本身：\n",
    "\n",
    "```bash\n",
    "$ conda install graphviz\n",
    "```\n",
    "\n",
    "然后要用pip来安装相关的python库：\n",
    "\n",
    "```bash\n",
    "$ pip install graphviz\n",
    "$ pip install pydotplus\n",
    "```\n",
    "\n",
    "接下来就可以使用了："
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "from graphviz import Digraph"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "dot = Digraph(comment='The Round Table')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "dot.node('A', 'King Arthur')\n",
    "dot.node('B', 'Sir Bedevere the Wise')\n",
    "dot.node('L', 'Sir Lancelot the Brave')\n",
    "\n",
    "dot.edges(['AB', 'AL'])\n",
    "dot.edge('B', 'L', constraint='false')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/svg+xml": [
       "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n",
       "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n",
       " \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n",
       "<!-- Generated by graphviz version 2.40.1 (20161225.0304)\n",
       " -->\n",
       "<!-- Title: %3 Pages: 1 -->\n",
       "<svg width=\"314pt\" height=\"116pt\"\n",
       " viewBox=\"0.00 0.00 314.29 116.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
       "<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 112)\">\n",
       "<title>%3</title>\n",
       "<polygon fill=\"#ffffff\" stroke=\"transparent\" points=\"-4,4 -4,-112 310.2872,-112 310.2872,4 -4,4\"/>\n",
       "<!-- A -->\n",
       "<g id=\"node1\" class=\"node\">\n",
       "<title>A</title>\n",
       "<ellipse fill=\"none\" stroke=\"#000000\" cx=\"153.1436\" cy=\"-90\" rx=\"44.393\" ry=\"18\"/>\n",
       "<text text-anchor=\"middle\" x=\"153.1436\" y=\"-86.3\" font-family=\"Times,serif\" font-size=\"14.00\" fill=\"#000000\">King Arthur</text>\n",
       "</g>\n",
       "<!-- B -->\n",
       "<g id=\"node2\" class=\"node\">\n",
       "<title>B</title>\n",
       "<ellipse fill=\"none\" stroke=\"#000000\" cx=\"72.1436\" cy=\"-18\" rx=\"72.2875\" ry=\"18\"/>\n",
       "<text text-anchor=\"middle\" x=\"72.1436\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\" fill=\"#000000\">Sir Bedevere the Wise</text>\n",
       "</g>\n",
       "<!-- A&#45;&gt;B -->\n",
       "<g id=\"edge1\" class=\"edge\">\n",
       "<title>A&#45;&gt;B</title>\n",
       "<path fill=\"none\" stroke=\"#000000\" d=\"M134.357,-73.3008C123.9526,-64.0525 110.8339,-52.3914 99.3284,-42.1643\"/>\n",
       "<polygon fill=\"#000000\" stroke=\"#000000\" points=\"101.4734,-39.3881 91.674,-35.3603 96.8228,-44.62 101.4734,-39.3881\"/>\n",
       "</g>\n",
       "<!-- L -->\n",
       "<g id=\"node3\" class=\"node\">\n",
       "<title>L</title>\n",
       "<ellipse fill=\"none\" stroke=\"#000000\" cx=\"234.1436\" cy=\"-18\" rx=\"72.2875\" ry=\"18\"/>\n",
       "<text text-anchor=\"middle\" x=\"234.1436\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\" fill=\"#000000\">Sir Lancelot the Brave</text>\n",
       "</g>\n",
       "<!-- A&#45;&gt;L -->\n",
       "<g id=\"edge2\" class=\"edge\">\n",
       "<title>A&#45;&gt;L</title>\n",
       "<path fill=\"none\" stroke=\"#000000\" d=\"M171.9302,-73.3008C182.3346,-64.0525 195.4533,-52.3914 206.9588,-42.1643\"/>\n",
       "<polygon fill=\"#000000\" stroke=\"#000000\" points=\"209.4644,-44.62 214.6132,-35.3603 204.8138,-39.3881 209.4644,-44.62\"/>\n",
       "</g>\n",
       "<!-- B&#45;&gt;L -->\n",
       "<g id=\"edge3\" class=\"edge\">\n",
       "<title>B&#45;&gt;L</title>\n",
       "<path fill=\"none\" stroke=\"#000000\" d=\"M144.6006,-18C146.9215,-18 149.2425,-18 151.5634,-18\"/>\n",
       "<polygon fill=\"#000000\" stroke=\"#000000\" points=\"151.7397,-21.5001 161.7397,-18 151.7397,-14.5001 151.7397,-21.5001\"/>\n",
       "</g>\n",
       "</g>\n",
       "</svg>\n"
      ],
      "text/plain": [
       "<graphviz.dot.Digraph at 0x10c269860>"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "dot"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}