examples.ipynb

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    "# Examples for lolviz\n",
    "\n",
    "## Install\n",
    "If on mac, I had to do this:\n",
    "\n",
    "```bash\n",
    "$ brew install graphviz  # had to upgrade graphviz on el capitan\n",
    "```\n",
    "\n",
    "Then\n",
    "\n",
    "```bash\n",
    "$ pip install lolviz\n",
    "```"
   ]
  },
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   "source": [
    "## Sample visualizations"
   ]
  },
  {
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   "outputs": [],
   "source": [
    "from lolviz import *"
   ]
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       "<!-- node140547309272064 -->\n",
       "<g id=\"node1\" class=\"node\">\n",
       "<title>node140547309272064</title>\n",
       "<polygon fill=\"none\" stroke=\"black\" stroke-width=\"0.5\" points=\"65,-176 0,-176 0,0 65,0 65,-176\"/>\n",
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       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"19.5,-145 19.5,-159 64.5,-159 64.5,-145 19.5,-145\"/>\n",
       "<text text-anchor=\"start\" x=\"20.5\" y=\"-149.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\"> &#39;elem18&#39;</text>\n",
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       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"1.5,-81 1.5,-95 19.5,-95 19.5,-81 1.5,-81\"/>\n",
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       "<text text-anchor=\"start\" x=\"20.5\" y=\"-85.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\"> &#39;elem19&#39;</text>\n",
       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"1.5,-79 1.5,-81 64.5,-81 64.5,-79 1.5,-79\"/>\n",
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       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"19.5,-65 19.5,-79 64.5,-79 64.5,-65 19.5,-65\"/>\n",
       "<text text-anchor=\"start\" x=\"20.5\" y=\"-69.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\"> &#39;elem11&#39;</text>\n",
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       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"19.5,-33 19.5,-47 64.5,-47 64.5,-33 19.5,-33\"/>\n",
       "<text text-anchor=\"start\" x=\"20.5\" y=\"-37.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\"> &#39;elem10&#39;</text>\n",
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       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"1.5,-17 1.5,-31 19.5,-31 19.5,-17 1.5,-17\"/>\n",
       "<polyline fill=\"none\" stroke=\"black\" points=\"19.5,-17 19.5,-31 \"/>\n",
       "<text text-anchor=\"start\" x=\"5.5\" y=\"-21.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\">... </text>\n",
       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"19.5,-17 19.5,-31 64.5,-31 64.5,-17 19.5,-17\"/>\n",
       "<text text-anchor=\"start\" x=\"35.5\" y=\"-21.2\" font-family=\"Helvetica,sans-Serif\" font-size=\"11.00\" fill=\"#444443\"> ...</text>\n",
       "<polygon fill=\"#fefecd\" stroke=\"transparent\" points=\"1.5,-15 1.5,-17 64.5,-17 64.5,-15 1.5,-15\"/>\n",
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       "</g>\n",
       "</g>\n",
       "</svg>\n"
      ],
      "text/plain": [
       "<graphviz.files.Source at 0x7fd3b8720580>"
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     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "objviz(set(['elem%d'%i for i in range(20)])) # long set shown vertically"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
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     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# test linked list node\n",
    "class Node:\n",
    "    def __init__(self, value, next=None):\n",
    "        self.value = value\n",
    "        self.next = next\n",
    "\n",
    "head = Node('tombu')\n",
    "head = Node('parrt', head)\n",
    "head = Node(\"xue\", head)\n",
    "objviz(head)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
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     "execution_count": 13,
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   ],
   "source": [
    "a = {Node('parrt'),Node('mary')}\n",
    "objviz(a)"
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  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
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    "head2 = ('parrt',('mary',None))\n",
    "objviz(head2)"
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   "metadata": {},
   "outputs": [
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    "lolviz(data)"
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    "data[0].append( ('a',4) )\n",
    "data[2].append( ('b',9) ) # whoops! should be different list object\n",
    "lolviz(data)"
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    "table = [ [] for i in range(5) ] # correct way to init\n",
    "lolviz(table)"
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    "key = 'a'\n",
    "value = 99\n",
    "def hashcode(o): return ord(o) # assume keys are single-element strings\n",
    "print(\"hashcode =\", hashcode(key))\n",
    "bucket_index = hashcode(key) % len(table)\n",
    "print(\"bucket_index =\", bucket_index)\n",
    "bucket = table[bucket_index]\n",
    "bucket.append( (key,value) ) # add association to the bucket\n",
    "lolviz(table)"
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    "key = 'f'\n",
    "value = 99\n",
    "print(\"hashcode =\", hashcode(key))\n",
    "bucket_index = hashcode(key) % len(table)\n",
    "print(\"bucket_index =\", bucket_index)\n",
    "bucket = table[bucket_index]\n",
    "bucket.append( (key,value) ) # add association to the bucket\n",
    "lolviz(table)"
   ]
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    "If we don't indicate we want a simple 2-level list of list with `lolviz()`, we get a generic object graph:"
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    "courses = [\n",
    "    ['msan501', 51],\n",
    "    ['msan502', 32],\n",
    "    ['msan692', 101]\n",
    "]\n",
    "mycourses = courses\n",
    "print(id(mycourses), id(courses))\n",
    "objviz(courses)"
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    "class Tree:\n",
    "    def __init__(self, value, left=None, right=None):\n",
    "        self.value = value\n",
    "        self.left = left\n",
    "        self.right = right\n",
    "        \n",
    "root = Tree('parrt',\n",
    "            Tree('mary',\n",
    "                 Tree('jim',\n",
    "                      Tree('srinivasan'),\n",
    "                      Tree('april'))),\n",
    "            Tree('xue',None,Tree('mike')))\n",
    "\n",
    "treeviz(root)"
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   "source": [
    "from IPython.display import display\n",
    "\n",
    "N = 100\n",
    "\n",
    "def f(x):\n",
    "    a = ['hi','mom']\n",
    "    thestack = callsviz(varnames=['table','x','head','courses','N','a'])\n",
    "    display(thestack)\n",
    "    \n",
    "f(99)"
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  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "If you'd like to save an image from jupyter, use `render()`:"
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  },
  {
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   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\n",
      "    digraph G {\n",
      "        nodesep=.1;\n",
      "        ranksep=.1;\n",
      "        rankdir=LR;\n",
      "        node [penwidth=\n"
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   "source": [
    "def f(x):\n",
    "    thestack = callsviz(varnames=['table','x','tree','head','courses'])\n",
    "    print(thestack.source[:100])  # show first 100 char of graphviz syntax\n",
    "    thestack.render(\"/tmp/t\") # save as PDF\n",
    "    \n",
    "f(99)"
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  {
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   "metadata": {},
   "source": [
    "## Numpy viz"
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  },
  {
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   "source": [
    "import numpy as np\n",
    "\n",
    "A = np.array([[1,2,8,9],[3,4,22,1]])\n",
    "objviz(A)"
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  {
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   "metadata": {},
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       "array([[  0.,   1.,   2., ...,  97.,  98.,  99.],\n",
       "       [  1.,   2.,   3., ...,  98.,  99., 100.],\n",
       "       [  2.,   3.,   4., ...,  99., 100., 101.],\n",
       "       ...,\n",
       "       [ 97.,  98.,  99., ..., 194., 195., 196.],\n",
       "       [ 98.,  99., 100., ..., 195., 196., 197.],\n",
       "       [ 99., 100., 101., ..., 196., 197., 198.]])"
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     "execution_count": 27,
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   "source": [
    "B = np.ones((100,100))\n",
    "for i in range(100):\n",
    "    for j in range(100):\n",
    "        B[i,j] = i+j\n",
    "B"
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    "\n",
    "B = A.reshape(-1,1)\n",
    "\n",
    "matrices = [A,B]\n",
    "\n",
    "def f():\n",
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    "    for i in range(w):\n",
    "        for j in range(h):\n",
    "            C[i,j] = i+j\n",
    "    display(callsviz(varnames=['matrices','A','C']))\n",
    "\n",
    "f()"
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    "## Pandas dataframes, series"
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   "source": [
    "import pandas as pd\n",
    "df = pd.DataFrame()\n",
    "df[\"sqfeet\"] = [750, 800, 850, 900,950]\n",
    "df[\"rent\"] = [1160, 1200, 1280, 1450,2000]\n",
    "objviz(df)"
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